Ya I think I read something about Wildmagic earlier. Do you mean additional companion stories? Didn't know about the Tiefling part, good one and the spell guess seems like a kind of common one but I would believe it.
I mean when you start up a new game there are options to actually play Astarion, Shadowheart, Wyll, Lae'zel, or Gale as your main character. The developers intend to give us access to them at some point in early access, and I think they may do so with patch 4.
Oh interesting, that would change up play throughs for a while.