I think that Paxton, Bello, Whitlock, Houck, and Crawford is a very intriguing rotation. However, I think that the biggest issue with that being the rotation is that it seriously weakens the bullpen. With Schreiber down, and Whitlock, Houck, and Crawford all in the rotation, the bullpen gets very then after Kenley, Martin, and maybe Winck(although it forces him into more high lev situations than is probably ideal). Playing the long game, this will help let us know what we have in Bello, Whitlock, Houck, and Crawford as potential long term rotation pieces.
That's more important than winning a few more games this year, but it doesn't mean that watching bullpen implosions this year won't be a bit frustrating.