I agree with attacking the acoustics first since this is where a smart 'file begins the quest to get great (best) sound. If you can take the brightest sounding system/room and turn it into a dull mush by overdoing sound treatment, then your happy medium obviously lies somewhere in between. If you have slap echo, you're gong to have bright sound. Start with the 1st reflections then the room tri-corners where slap echo lives.
While I agree that felt is a good thing because diffraction sucks, diffractions usually affect imaging more than anything else.
While I agree that felt is a good thing because diffraction sucks, diffractions usually affect imaging more than anything else.