That's an interesting perspective.
I'm playing Dark Urge and I'm at the beginning of Act 2, but for me, as a veteran of the first two games, it's clear how Dark Urge is a Bhaalspawn or some sort of Bhaal's avatar.
In the old games, Gorion's Ward didn't have these urges to resist. They could simply decide what to do.
Everything was credibly contextualized because even if you were a good character, you still ended up leaving behind a huge pile of corpses.
This justified that, even if driven by good intentions, your heritage remained that of the God of Murder's child.
Addressing your comment: In my view, even without skill checks to resist these dark impulses, the mere fact that you'll reap many victims is a good justification for your character's background.
