I'm playing through with my brother. We're on Chapter 1 right now. I've heard that there's artificial intelligence changes for the enemies that can be made.
I've looked through the vault, but I can't find anything (I did find this cool spell icon change, though! http://nwvault.ign.com/View.php?view=other.Detail&id=1250 ).
I'm guessing that we can't get the AI to change in Chapter 1 b/c we already started it. But if there's a way to continue the game in Chapter 2 with better AI, it'd be great.
Any other changes for playing through the OC multiplayer would also be appreciated.
I should note that we have vanilla 1.69 and my bro has a slow Internet connection, so we won't use the community-based add-ons.