Maybe she will get better, but she loses her flair/finnesse and reason to play her, at least for me. What was fun about Natsu was her playstyle.
I win fights without combos vs scrappy opponents, and the game is boring. I have to use 66B a lot or grabs or some other annoying thing like that. I don't enjoy the fight basically like that.
I lose vs good players but manage to pull off good combos and it was a close match = I had fun.
Natsu might still be strong after this but the playstyle change is what bothers me. I enjoy Natsu because of the combos. Without the CH combos Natsu is really boring to play, she doesn't have any real BE that can lead into combo chains like other players, and she doesn't really have any normal extensive combos she can pull off that don't rely on CH. So her CH combos were long and very damaging. Now they are shorter, do less damage and possible less openers too. I know they still will be there, but less of a focus on them is (IMHO) the wrong way to go. I dont want poke with bomb pressure. I played that way to begin with, but now after learning all her combos it is so much much more fun utilizing them than 66B with bomb pressure
I just don't think I'll be a fan of the playstyle, even if Natsu in terms is still a decent character.