Could Super Smash Bros. Exist as a true 3D game?

[Kasz216]

Hyperion said:
What about Tekken or Virtua Fighter? They seem to work pretty well. But I agree, Smash Bros. should stay 2-D

 Those games aren't true 3-D.  They are 2-D with a Step.

You could do it easy if you had a "lock" button to switch between opponents.  Still wouldn't be as fun.