I have enjoyed listening to my system in various asymmetric settings over the years, and found my favorite listening positions were often nowhere close to the center. I wasn’t paying much attention to imaging. I never used to think about it much but somewhere along the way got pulled in to trying to get perfect imaging at that perfect spot. It can be quite impressive, but too much focus on it can ruin one’s ability to just sit back and enjoy the tunes. I’ve got what I think is a very good sounding sweet spot now, but I have to laugh at myself just a little when I consider what I’ve gone through to make it work for me.
When I’m at trade shows, I preferentially sit off to the side. If there's ever a demo of something like BACCH or multi channel with a center speaker I'll give the sweet spot a try to see if they've got it working any better than I do.