I hope it's not about saving the world. I just founded a new Church of Borbarad, battled an Arch-Demon and blew up a Limbus Gate in Demonicon. And in first Drakensang I swapped Ardacor with Umbracor.
I'd like a more low-key, personal storyline like Drakensang: River of Time.
I can't think of any new credible world threat. Maybe a conspiracy centering around Despots of Despiona trying to bring back Pyrdacor.