This is some excellent feedback. Thank you, Jaco!
I like your assessment. It is contrary to the fun of trampling large groups of enemies to find yourself chasing a singular mage down all of the time, especially since their danger is supposed to make you prioritize them, but in the current state that simply results in you continually chasing one guy across a field while the situation escalates furthers.
The idea of a either a stun or a herd script would work wonders. I'd especially like to try and figure out how to get them to herd together as there's some room for experimentation there too to perhaps have some kind of effect on the projectiles or spell used depending on how many of them have banded together to cast while also keeping them together for the player. Could be neat!