I agree. The F32 M Sport bumper, while far better looking than the other F32 bumpers, still doesn't look quite as purposeful as the F30s. There's just some weirdness to it. I also prefer the new M235i's, it looks like they took the F32 M Sport bumper, spent some time redesigning it and did it right.
Other than that, everything else on the F32 is sportier, sleeker, and more aggressive than the F30. The wider hips and far lower roofline are so obvious in those pictures.