I prefer it as it is now than AI mindlessly attacking warriors on the front line. If the player himself can focus on the enemy mages, why can't the enemy do the same?
Agreed. Intelligent enemies should continue as they are, but maybe those that operate on instinct or who aren't intelligent should probably go for the nearest party member. Besides, if you make use of positioning and area spells then you can direct the enemy a bit better into going where you want them.
This was discussed a long time ago, but I'll again bring up my suggestion that enemy tactics could depend on some combination of Int+Wis. E.g.,
Int+Wis < 13 - always attack nearest target
13 < Int + Wis < 23 - still prefer nearby targets, but focus on those with lighter armor, maybe ganging up on a close one within reach.
Int+Wis > 23 - "smart" enemies. Will go for backline casters, gang up on the characters with combination of low hp&low ac. Might make use of high ground & debuffing items/abilities.
It would add some variety to and different tactics for different combats.
