I am mostly excited for Dark Urge. Some people on the forum, myself included, were complaining that you could either have an in-depth origin with extra dialogue options tied to the story, OR a custom character, but not both. The concept behind Dark Urge seems to be giving you a custom character AND an in-story, in-depth, mystery origin attached to it reminiscent of the Bhaalspawn. It is an origin aimed at the complaints people like me had.
Would I have made it a "murderhobo" origin? Probably not, but you can resist the urge. It is not unlike the Bhaalspawn (And the Slayer was datamined IIRC).
My first playthrough will probably be a half neutral half good Dark Urge, and my second will be evil Gale.