Even the best (measuring) speakers will probably only sound average if you put them in an untreated room. Another problem is room correction used incorrectly, i.e. to flatten the FR as much as possible. A little bass boost and rolled off treble imho sounds a lot better to enjoy music.
most modern speakers are designed like that already for consumer and professional uses. most speakers fellow the what's known as ''modern highs'' and modern roll off. it's to compensate for modern recordings with say not well use of compression and the use of boosted highs and lows to make up for the roll-off of their system(and most of consumer gear). play that same material in a controlled environment and it will come out boomy and bright. just saying most speakers,even monitors already take care of that naturally since they're designed like that.