NPCs swarming single PCs

Noticed this happening a bit, and some PCs were hit with multiple NPCs at once right at the start. I understand that there's code in place to make aggro NPCs spread their attacks out, but I think those particular NPCs weren't aggro. So we get people engaged x6 and whacked, it looks like.

Aggro NPCs have a mechanism to distribute their hits randomly amongst people in a room, but non-aggro enforcer types leap in to help their clan-mates, and often against the first target that attacks.

Until I've figured out a way to better handle this, I've reduced the maximum amount of opponents you can face to 4.