[William Sommerwerck]

One other comment, and I will let this drop...

The idea that the listening room should have a //significant// interaction
with playback has long been abandoned, for the all the obvious reasons.

The only currently acceptable form of interaction that I am aware of is LEDE.
It was developed to //minimize// room coloration from early reflections, while
allowing the creation of ersatz "immersion", without significantly altering
the speakers' direct sound.