Honestly, I really wanna know a few things. The friend group's canon reaction to the truth. The new town SUNNY moves to. What happens there. And how he lives there. And more...

I definitely need an OMORI sequel more than any other game.

Besides OMORI, I'd wish for a sequel of Cave Story.

Other than these two? I don't really know. Undertale, maybe...?

But yeah, they should NOT be the type of sequels that ruin everything entirely.