Quoted from "Popeyedsailorman;565083"
It's a little better now, still a few broken elites like lightning armor and WWS (elite version for k/m) that don't do magic damage through the magic formula, it's just another one of those useless base damages that aren't fit for trash mobs. However, they did kinda sort of juice up the mana return elite recently and it's pretty nice now, also they beefed the crap out of holy light domain so it's pretty fun to play with as well. If you can balance the mana return properly and have a good enough mana pool you can get 30+ seconds of immune (mana shield+ holy shield + candy).