I've said at least three times now I use a DIALOG LIFT system (actually a full front soundstage lift). That takes care of the rarely used 2nd and 3rd row seats (giving the "above the screen" treatment you claim to favor for those rows (L/R aren't blocked for those seats so I give the center an extra 1.5dB to compensate for losing half the lift effect in the stored "compromise" settings I use when someone sits there so it sounds even).
The front row is paramount as it's used 95% of the time. All levels are within 3dB (most within 1dB) with that setting and perfect for front row only or 2nd row only settings I've stored in the AVR memory for instant recall (I like to listen to some Atmos music from the middle of the room as it gives a very different perspective).
That doesn't mean the screen would block having the mains just above ear level in all rooms (not everyone uses a lower mounted screen; mine is set for reclined viewing for example and some use smaller OLED screens, etc that simply aren't taking up all available space). There's always acoustically transparent screens if one has the room behind the screen (I've got built-in bookcases and a window to deal with as I didn't build the room from scratch so I did the best I could. I think it sounds phenomenal, but I'm always looking for any tweaks that will increase the holographic illusion for Auro-3D/Atmos music/movies or DTS:X movies.
I'm experimenting with floor level speakers from the Scatmos surround (out of phase) ambient outputs for the front row at the moment, for example. Thus far, it works great for live recordings as ear level doesn't necessarily exist with live music. Ambient reflections can often exist all the way to the floor, particularly in front of you. I'd like to experiment with Front Wide Scatmos out of phase outputs for the floor between rows and I'm thinking of going full 19-channel discrete, which with Scatmos extraction would allow me to experiment with it for ambience effects
Obviously, you are free to do whatever you want with your room. It looks very nice. I'm sure you enjoy it.
I have a separate 2-channel music system upstairs with 6' Carver "Amazing" Ribbons using fully customized active crossovers, twin 10" bass drivers (flat to 26Hz) and available turntable on top of the usual digital sources. Until recently, it sounded best for two channel music and still excels at it, but the multi-channel Sonic Holography downstairs is like having stereo in 360 surround without the "fake" quality of Dolby surround processing and the like (Auro's upmixer also does a nice job with expanding ambience without altering the traditional stereo soundstage.
