DX11 would do nothing of the sort. Textures may look a bit nicer and the gameplay as a whole may be a bit smoother and fluid depending on your card.
The big difference between 1.0 and 2.0 was the speed and momentum. We've gained speed and lost momentum, so none of the movements and attacks these days look like they carry weight. It's a shame, but at the same time, the way the game is now, we couldn't really do with it like it was. :(
