Here's something that may sound a bit like an ego trip, but it is because I hate that sort of egoistic soloing mentality. I am primarily a rhythm guitarist, who knows quite a bit about chords, but I don't have lightning chops. I like solos, but not to any great extent. Often I hav ebeen in situations where nothing gets done because other lead guitarists spend their whole time soloing and being annoying.
A few days though, I was jamming with two other guitarists, and it was clear that I was the most capable at playing lead stuff, so they just said chose to not really solos, I think because of that tendency to get embarrassed about your own skills. I know how they felt, because I have been in the same position, but it just happened they were rhythm guys like me, and I had just been playing longer. Anyway, what it meant was that because I'm not a big solo fan, but I was the one expected to do the solos, I just jammed out some fills occaisionally, and often just didn't play. Because I had the chance to dictate pretty much whether people would be soloing, there was none of that ego crap, and we were all really happy with the results. In this instance, three reasonable guitarists managed to sound much more cohesive than many groups of lead players with much better skills. Maybe this just reveals my control freak side, but I hope you get the point.