Not directly. ED was to allow Inventions to add crafting to the game and add some depth. The bad thing was the nerfed with ED prior to having Inventions ready - if they had done both it would have been great!
Because the amount of damage 12 imps dished out was ridonkulous.The amount of damage a Fire Controller dished out at the endtimes was way more than that, but compared to the baseline of the time, that many imps was ginormously OP.
Uh? Game balance? Which is what all game developers strive for?
It was hurting the devs. In their souls. In their souls of game balance. Because they matter more than you, in the end of things.