If I ever rewrote Mha, the first thing I would do is let Bakugou get into UA successfully. And when people in UA see his behaviour, they at first don't take it too seriously, but then some talk with Midoriya and learn about Bakugou. And instead of normalizing it, they actually start to get concerned.
They start talking to Midoriya more, and the other classmates slowly begin to try and make him understand that this isn't right. It doesn’t happen instantly, it takes time, and Midoriya slowly realizes that Bakugou's behaviour is not ok.
After realizing, the whole of Class-A collectively question Bakugou, and honestly I'm pretty sure he would try to blame it on Midoriya, saying that he "snitched" or whatever. Like, we see him throw temper tantrums and have meltdowns like a spoiled brat denied his Ipad, I'm pretty sure he wouldn’t take the blame and just crash out and try to attack Midoriya. But before he can, the teachers intervene and they do not justify Bakugou. They have been growing concerned aswell, and they do not normalize his attitude. He gets expelled and his abusive and hostile nature goes on his permanent record. Maybe he even gets a restraining order.
Midoriya realizes that what happened to him wasn't right and that Bakugou deserves to rot in hell. He stops excusing his behaviour and stands up for himself, instead of letting Bakugou walk all over him.
And then finally, Bakugou is removed from the show. Happy ending.













