First off, this is not a debate. I'm trying to learn the difference.
From what I gather, your main goal is to server media throughout the house from one central location. Changing inputs on your TV is not the end game, but that it is all being served from one server. Okay, I personally see that as a media server of sorts, not really home automation, but that's fine.
Yes, my cheaper solution of FireTV's is not as sophisticated but it does get the job done when I want to resume something upstairs and I'm watching it downstairs (yes if it is streaming content, and yes that is the only thing my wife and I watch, 5 years without seeing a commercial or credits). Xbox Remote Gaming works as well, I play on 3 different TV's in the house, they each have crappy cheap Intel computer sticks in them. It is not as beautiful as yours possibly, but it works, and it does so without any problem (as long as the xbox is connected by a network cable).
I remember I visited this house a long long time ago that had audio cables spread throughout the house and it was something similar to what you wanted, it was much less technologically advanced but it was cool how they had one central location for all the audio needs and could send audio to whatever room they wanted. I think it lost its appeal within the first year for them, they never used it because having one central location for audio serving was really uncomfortable.
Now this is where it becomes a debate:
So in your case, you have your sat receiver and DVD player in one place serving the entire house. I'll give you my house as an example why that won't work. We have 3 satellite receivers in the house (my LNB has 4 outputs) and they are each playing something different at the same time for at least 1 hour everyday. My parents will watch something, my kids will watch something, and the maid will watch something. The DVD player is another thing, if it wasn't for streaming movies it just wouldn't work. My kids watch their streaming shows, and then I want to watch my show, if we had one DVD player, it wouldn't work. Plus, getting up and going to another room to change the DVD? I don't know if you have kids, but using a FireTV is the best thing ever, I have kid mode on and let them use the remote control, and being more than one kid in the room, they watch parts of 3-4 different shows in the span of an hour, each one fighting about what to watch for 15mins. Spotify which is a great example because we do use it in the house, already plays in every room that has a TV (using FireTV) or Echo device in it which I already do, or hell even our phones. I will be listening upstairs and my wife will be listening & working downstairs. She doesn't have an Echo there but she has a cheapo Lenovo tablet that doesn't give her any problem for streaming any AV. And with Spotify, we can decide if we want to broadcast it to other devices from whatever phone/tablet is in our hand already playing. Now let's say I didn't want to do this the legal way of subscribing to these streaming services, well that's where Plex would come in handy and you know that plays on everything. The only part where I see this really being an advantage is with the cameras, our current NVR is tucked away hidden somewhere, I could connect it to the internet but I don't like doing that. My 2 dlink cameras that I have inside the house however can be viewed from the FireTV and if I had an Echo Spot or Echo Show I could view them from there as well.
Anyways, to answer your question:
-Centralized automation using one control point - Alexa / HomeKit / Google Home can achieve that
-Clean integration and simple interface - same as above and I think this is more geared towards personal taste of what is clean/simple. I find Android cleaner and simpler than iOS for example.
-Endless customization - same as above, but combined with IFTTT and apilio.io
-AV processing - DEF. not how you want it. I've never even read home automation and media serving together in how you want it. But OK.
-Reliable Direct and indirect lighting control for led lights including dimming - Like I said earlier, I couldn't find dimmers but the light controls are reliable.
-Complete HVAC control - This I would like to learn more about from you.
So with HVAC. We're talking radiators/furnace as well as your AC I take it? So how are you handling those requests? For the AC I'm using an IR blaster like mentioned before. For the furnace, I have 3 options, I can setup a thermostat wherever it's wired. Or I can setup a thermostat with a remote sensor. Or I could forget that main thermostat and just put a controller to start/stop the furnace and setup different thermostats throughout the property and each one can give the furnace the start/stop command. So if room 1&2 are OK but room 3 is cold, it gives the start command until it reaches the temperature.
All in all this is very educational for me, appreciate the discussion.
From what I gather, your main goal is to server media throughout the house from one central location. Changing inputs on your TV is not the end game, but that it is all being served from one server. Okay, I personally see that as a media server of sorts, not really home automation, but that's fine.
Yes, my cheaper solution of FireTV's is not as sophisticated but it does get the job done when I want to resume something upstairs and I'm watching it downstairs (yes if it is streaming content, and yes that is the only thing my wife and I watch, 5 years without seeing a commercial or credits). Xbox Remote Gaming works as well, I play on 3 different TV's in the house, they each have crappy cheap Intel computer sticks in them. It is not as beautiful as yours possibly, but it works, and it does so without any problem (as long as the xbox is connected by a network cable).
I remember I visited this house a long long time ago that had audio cables spread throughout the house and it was something similar to what you wanted, it was much less technologically advanced but it was cool how they had one central location for all the audio needs and could send audio to whatever room they wanted. I think it lost its appeal within the first year for them, they never used it because having one central location for audio serving was really uncomfortable.
Now this is where it becomes a debate:
So in your case, you have your sat receiver and DVD player in one place serving the entire house. I'll give you my house as an example why that won't work. We have 3 satellite receivers in the house (my LNB has 4 outputs) and they are each playing something different at the same time for at least 1 hour everyday. My parents will watch something, my kids will watch something, and the maid will watch something. The DVD player is another thing, if it wasn't for streaming movies it just wouldn't work. My kids watch their streaming shows, and then I want to watch my show, if we had one DVD player, it wouldn't work. Plus, getting up and going to another room to change the DVD? I don't know if you have kids, but using a FireTV is the best thing ever, I have kid mode on and let them use the remote control, and being more than one kid in the room, they watch parts of 3-4 different shows in the span of an hour, each one fighting about what to watch for 15mins. Spotify which is a great example because we do use it in the house, already plays in every room that has a TV (using FireTV) or Echo device in it which I already do, or hell even our phones. I will be listening upstairs and my wife will be listening & working downstairs. She doesn't have an Echo there but she has a cheapo Lenovo tablet that doesn't give her any problem for streaming any AV. And with Spotify, we can decide if we want to broadcast it to other devices from whatever phone/tablet is in our hand already playing. Now let's say I didn't want to do this the legal way of subscribing to these streaming services, well that's where Plex would come in handy and you know that plays on everything. The only part where I see this really being an advantage is with the cameras, our current NVR is tucked away hidden somewhere, I could connect it to the internet but I don't like doing that. My 2 dlink cameras that I have inside the house however can be viewed from the FireTV and if I had an Echo Spot or Echo Show I could view them from there as well.
Anyways, to answer your question:
-Centralized automation using one control point - Alexa / HomeKit / Google Home can achieve that
-Clean integration and simple interface - same as above and I think this is more geared towards personal taste of what is clean/simple. I find Android cleaner and simpler than iOS for example.
-Endless customization - same as above, but combined with IFTTT and apilio.io
-AV processing - DEF. not how you want it. I've never even read home automation and media serving together in how you want it. But OK.
-Reliable Direct and indirect lighting control for led lights including dimming - Like I said earlier, I couldn't find dimmers but the light controls are reliable.
-Complete HVAC control - This I would like to learn more about from you.
So with HVAC. We're talking radiators/furnace as well as your AC I take it? So how are you handling those requests? For the AC I'm using an IR blaster like mentioned before. For the furnace, I have 3 options, I can setup a thermostat wherever it's wired. Or I can setup a thermostat with a remote sensor. Or I could forget that main thermostat and just put a controller to start/stop the furnace and setup different thermostats throughout the property and each one can give the furnace the start/stop command. So if room 1&2 are OK but room 3 is cold, it gives the start command until it reaches the temperature.
All in all this is very educational for me, appreciate the discussion.