I'm just going to do stuff I see happening for the students of 1A.
I'm not sure how much major character development we'll get in school stuff, but I think a lot of the school stuff will be doing internships or hero work experience where they have to deal with the outbreak of villains, as well as hatred from the public.
As such, I think quite a few characters will get opportunities to regain or grow more confident in battles against real villains, sort of like Kirishima did when he fought Rappa.
Outside of growing in the midst of battles, I think that the students will probably try and cheer each other up and do their best to get each other in the best spirits possible.
Of the students in 1 A, these are the ones I think will have obvious plot lines.
I think it would also be interesting to explore how the students deal with stuff while Midoriya is in a coma(though I can't really say if that will be a major thing or not, or whether we'll just cut to him waking up).
Midoriya: One for all stuff. Mastering his quirks. Dealing with the fall out of destroying his body.
Shoto: His family issues. He'll probably focus on getting stronger and going after Dabi.
Bakugo: Probably further develop his friendship with Deku. Will probably be heavily involved with his recuperation. Could also see him be a major part of the emotional support for the rest of the class.
Uraraka: Will probably have to actually confront her feelings for Deku at some point. Will also be emotional support for the members of the class who were hardest hit by the war emotionally.
Tokoyami: Will probably have a few moments with Hawks to clarify what happened with Twice. Probably to try and ease all doubts from his mind. Depending on how that turns out, that will probably direct the course for Tokoyami's characters, as well as give a nice bit of reflection for Hawks.
Kirishima: Probably won't have too much character growth, but will probably serve as an emotional support in the class. Will probably continue to get stronger, and may have his own fight.
Kaminari: Will probably continue to grow more confident. May get a character moment with Jiro.
The other members of class 1 A were emotionally devastated by the results of the war, however, I think two characters in particular were highlighted. Like, I think most of the characters will need to recover from mental, more so than physical injuries that were set up or received in the war arc. These physical injuries range from grieve, to self doubt and blame for failing, to uncertainty, to repressed feelings.
Momo: Was shown being exhausted, so she'll probably need to regain her confidence and move on from Midnight's death.
Mina: As someone who specifically highlighted that 'there's no way Midnight could be dead' and was frozen in place by Gigantomachia, I think she'll probably need to regain her confidence as well. May get a moment from Kirishima, who may thing Mina is turning into what he was before he went to UA.
Tell me if you think that Horikoshi will cover or not cover in relation to my predictions. Do people see different things happening for the characters I mentioned? Do you think that they'll just be ignored? Give me your thoughts.