I would still like to know what happens if you don't take any of the origin companions with you into Act 2? Are you then forced into playing with a party that includes mercs?
My bet is that wouldnt be possible.
Im quite sure that at the end of Act I. we will be in situation where our characters will believe that their tadpole problem was resolved (wich would be most likely false) ...
And we will have to pick one companion we will acompany on their way to Baldur's Gate ...
I also dare to presume that if we will play as a Origin character, rather than Tav, this decision will be made for us, bcs Origin characters allready have their own reasons to go there.
So either that ...
Or we dont pick any and will just travel to Baldur's Gate "bcs plot".