Whilst I also wouldn't say there were 'lots of' rotations, you do have to rotate in most solves, which you never have to do with ZZ/Roux. Not many people use d/d'. And I agree that cross on left should probably be added as a variant of CFOP.It is not true with y moves in CFOP. U can obviously use lower case Moves to solve it or use lower case D('). And as I saw cross in left (Sergey)
U also don't have any cube rotations in f2l just Z' and that's it. I don't see the problem with y in f2l cuase it is not needed pleas edit that.