Thought I would post an update. I had an old sonos connect that stopped working so took advantage of the Sonos Trade up program which gets 30% off. Picked up a Sonos Amp for $450. At first I was irritated that it didn't have any eq options besides treble/bass, and loudness. Used it to drive 2 pairs of speakers in the garage/deck. Decided to swap out the Denon x3500 for the Sonos Amp in a basic living room system and see how it goes
Equipment:
TV
Pair of Revel M106 speakers
Apple TV 4K
Dish 4K Hopper
Sonos Amp (Roon endpoint)
Setup: Hooked up ARC on TV to HDMI on Sonos AMP, changed the sourses to go to the TV instead of the receiver
Some random thoughts
-Form factor is great for a living room setup. Compact, no distracting lights, runs very cool
-ARC seems to work really very well (so far).
-Switching inputs on via TV works very well. Changing volume with TV IR controls volume on Sonos amp
-Power is very good powering M106s.
-Roon endpoint works very well. You start playing a song, input switching automatically. Roon volume changes the Sonos Amp volume which seems obvious but is important.
-Speaker terminals are fancy but seem strange.
-Like Sonos always incuding 2 network ports to use like a hub for other devices
-EQ for TV-This is the biggest downer as already mentioned. Just Treble/Bass and Loudness. This is a glaring omission for sure. Sonos has automated EQ that works pretty well called Trueplay. Not sure what they were thinking not including it on the Sonos Play. Since this is just for casual tv/music listening I am going to go without any eq for TV. M106 sound fine with tv without it.
-EQ for Music-I have measured the space with REW and will use a few filters eq some of the worst peaks under 200hz and call it good. At least for music, roon saves the day

The Sonos Amp is a pretty ideal piece of hardware for a living room. We are going to keep using it in the living room and sell the Denon x3500. It works well and is even more straightforward to use than the receiver for the living room.