Pretty much what Boing said. Basically nobody knows about the Todoroki home life stuff. I feel that this arc could be the start of him getting either karma retribution for abusing his wife or he can start to redeem himself.
Bakugou was really only terrible to Deku. He's a jerk in general but it's name calling and threats that he tends to not follow through on. Provisional license was a turning point in his mindset.
But we've had other arcs focusing on stuff mostly unrelated to either of them. So this would be a good time to begin addressing at least Endeavor. He's either going to come out on top in this encounter or he's gonna get wrecked. Who knows where this could all lead though. Horikoshi isn't too predictable.
Or he could come out on top to the public, and then try to get validation from Shotou, only to rejected as he was at the end of license exam, as Shouto's issue with him is in the treatment of him and his mother, not in villain fighting, which could lead to Endeavor relapsing in anger/negative behavior, which has been my headcanon, and even then after that he could still make improvement or get worse.
I've always believed we'd get a flashback to the courting days of his relationship with his wife, which I believe might have not been as Shouto told (child's perspective, but not that terrible theory that Endeavor wasn't really an absuer) and that there was actual love before he became abusive, so who knows when we'd get that Endy flashback and what the present circumstances around it would be.
All I know, is I won't judge it until it's done, and that anyway it goes I just want Endeavor to be well written.
I wouldn't mind him going rogue after his abuse is revealed to the public, and even having a villain arc.
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I don't see Endeavor making it out MHA alive. At the very least he's getting the Iida's brother treatment.
I've always imagined some sort of self sacrifice where he overheats to destroy something or some villain.