Originally Posted by Hexblade

Targeting
While its cool that goblins act intelligent and target the weakest looking character, not all monsters should do this. Ogres and giants would challenge the toughest looking-warrior, undead and fiends target clerics and paladins, beasts tend to look for whoever is tastiest, and fey the most charismatic. I suggest you institute this and not make combat a mere chess game between the player and computer.

I really, really like this. Would be great if something like this was added.
I've seen some complaints about enemies during everything they can just to attack the party member with the lowest AC, even if it'd cause them to get AoO'd in the process.
If the AI has some sort of priority system for targets then surely it'd be possible to change the said priorities based on the enemy type.