I have never been one to chase imaging. Sound stage... maybe, but not imaging. It always seemed like a hi-fi salesman's gimmick more than anything that represented reality. I have been to lots of live concerts; the only time I have ever noticed any kind of imaging is small-scale, non-amplified settings. I think hi-fi systems and products that are designed around imaging largely miss the mark about what makes hi-fi, and music, great. Smooth, wide frequency response, flat phase, even dispersion and dynamic range are what it is all about. Thank you PWK!
However, I have found that as a system gets better, so does its ability to image. Though I have never chased imaging per se, my system images quite well. It turns out that a well-treated room, flat phase, smooth frequency response and even dispersion actually make for great imaging as well.
So while I don't find it a worthwhile characteristic to pursue, it can actually be a good indicator of system performance, all else being equal.