I restarted this last night. Not sure whether I'll play through the whole thing again purely because of time but... I'm very tempted.
Thought I'd just go with a Dark Urge run - exactly as the character is drawn (which means he's a Dragonborn sorcerer - neither of which would necessarily have been my choice!). So far Dark Urge is quite the thing. I definitely recommend playing it having done a run through previously, purely because one of the things he's done already is deeply upsetting in light of the outcome of my previous game. (And another was darkly hilarious).
It certainly adds a nice new layer to everything. A mystery bubbling along so that the story beats are slightly different, and there's at least one question to answer that was never there before.
Also, it's really hard going back to being weak nobodies - I keep wanting to reach for one power or another, only to realise it doesn't exist. (Being a sorcerer is also proving challenging as I'd got rather used to just hitting things once I'd run out of spell slots before...)
I'm not sure I can manage a durge run. Really not sure what to do for a second run, other than maybe just advancing to Tactician and working on builds.