Simple, its sucks, i dont have any idea what You've been thinking about putting seals on areas at all.
I just lost my cube + 30+ sacreds in it. Ive been trying to put potions to my belt fighting Arreat summit uber boss, but ive missclicked and in addition didnt put ctr, so yes... "the game is very easy as it is, so why not put some challenge into it" right ?? (sarcasm if anybody ask)
Diablo + Baal are way overpowered compared to Andy, Duriel or Mephisto. Their cast speed is max I suppose + no cooldown... really...