I don't have room for more detail or imaging. I can count the instruments in the music I listen to. Since we now have internet, there is no shortage of new to me, 2 channel music.
Waveguide horns, in my case, tend to provide a believable/cohesive center image without a center channel so it would be redundant in my case, per my listening habits and size of my space. The waveguide function of large (12" or more) woofers only adds to this effect (half of how we got/get by without additional channels) and half of why I insist on adequate displacement, room be damned, and it really has nothing to do with higher SPL. There is no hole no matter how close you get, even with the speakers almost even with each ear while looking straight ahead. It's not an overwhelming center image, but you can surmise the layout of the stage with a relatively high degree of accuracy.