Gawds no. Its bad enough when you get charmed over and over again by something and you try to run away a few steps at a time, as each charm wears off of you.
The OP is having delusions based on his own desire for a boring old tank and spank static camp. Random roaming mobs that would assist NPC's by charming whoever had the most aggro would be much more in line with a mischief server. Fortunately that's not going to happen
How about mobs that are randomly melee immune, to combat monk OP? There are so many things you could implement if you're going down the class hate/identification rabbit hole.
How about we let them see if they can iron out random loot and save crazy suggestions for the next TLP. I am still expecting a 1 or 0 to go wrong and cloak of flames to drop from a fire beetle.