Well Gry does tend to find a lot of the levels campy - but that's because CC's teamplay and individual quality is SO high, that they could play each and every1 of those levels blind and they know all the sweet spots etc.
I for example never found zaitox to be all that campy. Sure you got the high ground, but thats nothing an attack or 2 cant fix. If gry is up there it might take 3 - still possible though

MS is indeed easy to camp because of all the carrots laying around everywhere. So you can kill with a powered up weapon, maybe taking 1 hit in the process and you just take the carrot under the base.

Still, I wouldn't mind seeing MS - but then again I wouldn't mind seeing bblair either, yet it isn't in the pool. Supposedly biased.
Thing is, sooner or later we're gonna have to square on certain levels and it might as well be sooner rather than later.
And no, I'm not saying we shouldn't discuss this topic, but I am saying that we are going to be hard pressed to reach a consensus.