As bad as Mek is guarding perimeter oriented 4s I think Nazr would be much worse. Crash should probably be moved to the 4 IMO when we play teams with guys like Lewis, but he's not a stellar man defender either. I still think Duds would work well in that equation (undersized 4 that plays tight man D).
My question is why don't we at least TRY to make the other teams react to us vs. the opposite? Keep them both in there and have one defend Howard and the other protect the paint against the drive? Instead of using our strengths we give them up.
DNB absolutely...and only go from it when it's obviously not working. Even then I think we'd be better off sinking and swimming with a set rotation in the long run.