So I've played through Korthos far too many times while experimenting with different classes and builds. Here's a couple of things that stand out to me as needing a tweak:
1. The rest shrine in Stopping the Sahaugin seems too difficult to find for level 1-3 characters. I've run a bunch of characters with maxed search through there, and only one of them was able to find the rest shrine (I think she was level 3 and doing elite with a bunch of level 5-6s). When she did, the rest of the group was like, "whoa, I didn't even know that was there". If this rest shrine is meant to be used, it should be easier to find.
2. Please, for the love of PETE, make that skeleton warrior at the end of Necromancer's Doom stand still so we can hit it. I understand the squirrley caster and archer AI, even though they're kind of a pain, but this guy makes no sense. He doesn't hit you, he just jumps and jumps and jumps and jumps...