1. It must be that we never make it into the latter part of the rotation? But that's confusing because we play for 3 hours or more at a stretch. Off the top of my head, I don't remember playing Raven down / Escalation / Rooftops / Tyro / Process / Bullet Marsh / Mausoleum (once maybe). Looking at the list of missing maps, I don't like some of them anyway, I guess. Though I think Tyro is actually one of the best and Process is fun.
2. I'll raise my hand as one of the weaker players in the group, but I'm not going to point the finger at anyone else
3. Maybe I don't know the group well enough, but it seems not many play the camping style. C'mon Prophet / Picklel, it won't hurt to try it once or twice. Played with standard weapon sets or even weaker than standard (fewer power weapons) it plays a bit differently (lots of cover and Lancer crossfire).