After dealing with rooms that simply do not work for music OR home theater, build one, or use a different one. You could build one for the price of a pair of Wilsons. Or get a good set of headphones. [These will prevent you from hearing what your partner says as well].
Lose weight or buy better fitting pants
We talk about fixing the room constantly but couldn't the size and shape of the speakers be the problem?
I realize it is not economically feasible for manufacturers, but this could possibly relate to dyi folks.
For example a long narrow room with low ceilings would have speakers proportionate to the dimensions of the room. Smaller tweeters, drivers, with an enclosure mimicking the room. You would design the speakers to fit the room, instead of fixing the room. Start with the room as a extra enclosure. Make sense?