Experimental 3D transforms have been in for a couple of months now. However, Animator only renders 3d transforms with no perspective, once perspective is added you'll have to rely on testing it in a browser with 3d/perspective support.
We are working on properly rendering 3d perspective in Animator.
Animating the perspective/perspective-origin is on our backlog. If you really want this, you could also add it manually to the exported html yourself or to the project properties -> Head HTML.