Seems to be treading the same path taken by Suda51 in No More Heroes (i.e. another mature Wii title), except this game's idea of style doesn't seem to work nearly as well. The dark humor gimmick of "look, they're spilling five thousand gallons of blood per second" wore off really quickly for me in NMH, and the violence here is bound to follow suit. Doesn't look like it's got very much depth aside from the gore novelty, but then this is just a preliminary trailer for the game.
I'll pass. However, I admit that if a friend bags this sometime down the road, I'll no doubt check it out and be amused for a while.