Check this out
Whether they are good or not is subjective, but they're 3D models regardless. In fact they've been around for a while, I remember using them in Doomsday a long time ago. But they've been polished up a bit.
The problem is that, even if you're not a purist, the models look kinda goofy in-game because their movement is still bound by the way they originally move.
In order to make the models look good, you'd have to tamper with the gameplay.