I'm more of casual/relationship development and character growth [...]
I don't think it's time to fight as we're rebuilding and reuniting
Solo books-
Crystal or/and Medusa: It's the popular choice, I believe. As much as I think All-New was good for Crystal;
Reader: Popular choice too, he's great;
Gorgon or Triton: Personal choices, but Marvel doesn't seem to like the fishman;
Naja: We didn't see what her life was like before and she seems to have liked or not mind about the transformation.
I feel like the last two could have more character development.
Team books-
Rebuilding and Exploring Tribes
How is Attilan being rebuilt? How Iso and the are others coping?
Probably focused on the royal family (maybe going back to power?)
Getting to know the other tribes.
Here they could make nuhumans and inhumans groups to explore and get to know other tribes better, incluinding Ennilux, of course.
Continue the research on the Primagen and it's conversion to terrigen...
and even the other variations, creating a friendly union/bridge with other inhumans outside Earth.
[...] but I know that, sadly, conflict sells more, so it's inevitable
Revenge on the Kree
I will consider that DoI will not be 100% erased because it already has been mentioned in many places.
So... nobody died, they were only seriously injured (everyone is fine, we have good doctors). Secretly there was a recruiting going on to get revenge for what happened. Ronan could help here too.