I'm trying to find some good faction/quest mods, particularly for an evil/high level char. I already have the Illuminated Order, and I tried The Underground... that one seemed to cause problems with crashes/corrupted saves and made me realize just how much I hated spiders, so I took that one out. So, does anyone have any suggestions?
Huskobar recently made a patch for the underground2, which should fix most of the problems. I haven't tried the quest with the patch though, but the patch can be found http://www.gamesas.com/bgsforums/index.php?showtopic=1060060&st=0&p=15431625entry15431625
You could try the horrormod. It's a large and very ambitious questmod, with puzzles, tough enemies and a remarkable creepy atmosphere. There is one or two obscure places which wasn't finished, but that shouldn't interfere with the gameplay.
You should be warned, that some of the enemies are extremely tough though.