I a lot of fans would probably bash me over the head for this, but I wouldnt mind reading more about their kids at Hogwarts. And if not, I would still be fine with, prequels with the Marauders or Sequels with the main characters and their jobs
lol I once said it in my driving class and almost everyone thought it wasnt going to be a goof idea because they would be at Hogwarts it would be "as magical"