Ok, here's one I thought of I don't think is on the lists --- Ranma being able to "control" the curse....but it's not considered a cure. If he can control it (especially if there's no water trigger any more which is usually the case), then it's hardly a curse any more, and can only be considered a positive thing.
(I don't have any problem with the author going in that direction, more the mentality of it)