I suppose I sort of put my foot in my mouth on that last post, my point was that you shouldn't be in a band that you're dissatisfied with on a personal level. You can't go out there and play when you want to tear the bassist's head off or vice versa. However, it is valid that you should try and pick the virtuoso's brains for whatever you can get.

I guess it boils down to these main components:

1.) The people have to share your vision
2.) You can't have animosity within the band
3.) You also should be on the same sort of musical ground in terms of technique.

This last one doesn't matter so much as long as the band holds itself together, because generally the ideal setup would be that the band has patience for anyone who's lacking a bit in technique. This is where it's important to be on at least speaking terms with your band members, because the more animosity there is, the more disputes there will be over style and technique. This is all just from my experience though, I could be wrong.

Hope I removed the foot from my mouth and offered some real help.