I feel D:OSII is inspired heavily by Dungeons & Dragons (D&D) 3.5 where tanking in the MMORPG sense doesn't happen. Something is threatening because it casts spells or destroys foes in one hit or one round, not necessarily because it funnels enemy attacks onto a subject.
I find this a refreshing change from many other games which require or heavily promote MMO-style tanking. I find this a welcome change to, however intentionally, give us a D&D 3.5-style video game as a tactical turn-based RPG, better than the official ones (Temple of Elemental Evil, Pools of Radiance, etc.)
