Do you have the original tweeters in the 2.3s, or the later revisions (vented). When my friend worked at the store we updated a few pairs (and those were where someone had blown a tweeter). On my first visit to the store, when I moved to the area, they had a pair of 3.6s on the floor but I never heard them as by the time I got back to the store ithe 3.6s were gone and I was just looking for a CD player as I was renting a temporary townhouse with most things in boxes waiting for a new house to be built.
The later tweeters might help a hair with harshness at higher volumes. I had moved on to the 7.2s by the time the updated tweeters for the 2.3s came out. While I use my audio rooms for audio, I do treatments to tame the bad areas (without making it look like a studio). GIK Acoustics (and others) have art panels. They have lots of pictures to put on them or you can put your own (I actually have a couple of wildlife shots in my office - more the pictures vs. treatment)