We’ve done so much dystopian. I’d like to see more upbeat futurism. Not necessarily utopian, and not “Jetsons”-style shiny futures. Future-realism? Something like that. Heroes that are “makers”, skilled various science & engineering disciplines.
As for the conflict, that can come from lots of places. Quests and competitions, character conflicts, etc. Suppose their society has been confined to a small area for a long time. The story begins when the gates are opened and people are free to return to whatever has become of outside.
Personally I like the idea of post-post-apocalyptic, where at least part of the story involves finding forgotten places & things from the “apocalypse” stage.
Anyway, that’s what I’d go for.
Curious, any reason it has to be exclusively about bad books?