It depends on who is taken, and on who is gained. I really do want to see another Kong next (with exceptions), perhaps another Metroid representative, Toad, Dr. Eggman, and others, but if that means cutting King Dedede or a few other favorites, then that by itself would be a strong deterrent. I could take it or leave it, depending on such information. I likely would not be disappointed, but choose to be safe, and not confirm that.
Final smashes are no longer cutscenes, but the roster shrinks to two-thirds of its original size, with the characters cut being the newest of every franchise with less than three representatives.