Isbeil notes in her writings that a sourceror's brain is much better preserved after a longer exposure to toxins, compared to a normal person's brain. May be a small nugget in the grand thing of os2 lore, and explain a little about silent monks and the difference between ordinary beings and sourcerors.

But I am not trying to excuse any studio here ;D.

I would have loved to see mature and well crafted characters opposing the party.