On topic:
There is some another Origin characters as companions promissed ...
Most people presume there will be 8 Origin characters in the end.
But as far as i know, one of first things that was told by Larian is that there will be some "mercenary" function, where you can get some companions without strong believes, or stories ... so i would dare to presume, we shall get missing classes there.
Wait, Wyll can actually die in that fight...? I have never had it even close to him dying cause the gobbos like to focus Gale or the mercs at the gate.
Not just that ... you can even kill him on purpose, and Zevlor will still greet you as rescuer.
I didnt yet managed to kill everyone before fight ended, usualy at least one Tiefling remained ... but reaction about you attacking them is lacking.