Edwin used to piss me off greatly in BG I ("Stop, go no further; I require the services of your group ((ah yes, they will do nicely))."). However, aside from Minsc, he's my favorite male NPC in BG II. Actually, that's still kind of a toss-up...
In any event, I expect great things to come from this mod! Not only is Edwin a great quirky character, he's evil, which makes the writing a little more challenging, in my opinion, and I'm really looking forward to this. Who says evil can't love?
I've just got this big smirk on my face at the moment; I can't wait to see how the Nether Scroll ordeal will be worked out. That was always my favorite part of the game, particularly with Minsc semi-hitting on "Edwina."