They are going to need to tweak the AI to be less of the "Obnoxiously bad DM" that it is right now. Essentially the AI just meta-games and targets lowest health or lowest AC in a lot of situations. The AI has no concept of monster personality, its playing with the same brain in every battle, each and every monster is equally intelligent with the same strategic priorities in combat... even the brainless beasts seem to know to target the low AC character first, or will take an opportunity attack to get in range of a weaker target rather than just attack what is in range.
Defense action would probably lead to your tank being ignored... but it would be great for that low HP character that is just going to be tanking by proxy because the AI for all monsters shares the same HP driven target selection protocols
I totally agree with you; good luck keeping Gale alive in any encounter where you don't have mage armor; mirror and stealth him every conceivable round (I'm exaggerating but just barely)
