...How though? Admittedly I've only played the first Bayonetta but she seems almost perfectly realized. Almost every move she has in Smash is directly pulled from her games, and the only real glaring omission to me is her torture attacks (totally understandable why they're not there). If you think she's an extremely bad representation, I'm not sure any character in Smash even hits the "barely tolerable" mark.
no panther/crow forms, only using madama butterfly when she has a ton of other summons that would make for infinitely more interesting attacks than just the forward smash but upwards or downwards.
you could have the panther form and the crow form act exactly the same as bayo's sspec and uspec, it just gives them extra flavor that fits her better and makes the moves like, visually interesting instead of dull as hell. bat form shouldn't even be her standard dodge and should only be there for the counter, if you wanted to keep uspec and sspec the same you could just put crow and panther onto air dodge and ground dodge. bat dodge sucks anyway so it could legitimately be an improvement
all three of bayo's smashes are functionally the same, with only the dsmash having any visual flavor. you could easily have had dsmash or usmash be hydra, gomorrah, basically any of the contract demons. again, it can functionally be the same, just with a different appearance to spice things up a bit. it isn't that difficult.
her final smash is also pretty bad, its a reference to the start of bayo2, but she loses her contract with and kills gomorrah instantly afterwards. i get you can't really do the fused summon from the ends of either game but you could at least make it one thats actually considered more impressive. even madama butterfly would have worked there since she's the one bayo usually uses during climax time
also the lack of her using any other weapons besides the guns is understandable but super disappointing
i beat both of the bayo games this week if you can't tell