I don't think they are re-introducing the B-team for no reason.
I can see Fordola joining too.

That said, there is one thing that bugs me: the trust system.
See, they made a pretty big deal about Estinien becoming a trust ally, as if it was a huge effort for them to just add one character.
If you take the whole current cast out and replace it with new characters, they would need to add quite a few new trust companions.
So, I believe that only a couple of them are out. Probably the twins. Replace them with Arenvald and Fordola. Done.