I could stand the overheads on a manual dimmer for entry/exit and general use. 2 lutron units could be used as scene lighting during movies as you have mentioned with preset dim levels. Pretty slick and user friendly.

Also

There will be a smart relay controlling a room exhaust fan off of my AVR trigger, so likely I can program it to open the main overhead lighting when BD input is selected. Makeshift automation, but works.

So, come in room, turn on main light switch.

Hit all on in harmony and sconces and ropes come on with gear.

Select watch movie (BD) and mains lights turn off (relay trigger) and lutrons dim down.

I'd set it up so "play" dims to off and "pause" or "stop" dims to preset.

Turning all off would return the relay to N/C state and main overheads would come back on. Sconces and ropes off.

This is already getting fun!