Good post MustangSally--Especially the point about landing firm and having less energy to dissipate vs. landing smooth. Something I had suspected but never heard anyone else talk about.
But I might disagree on one point. You wrote, with respect to F25 vs. F30 landings: <<The angle of attack is the same for both landings.>>
I won't argue the AoA statement because I just don't know. But the *sight* picture, in other words, the pitch attitude is flatter with F30 vs. F25 and that's why my company requires F30 for CATII operations.