This is a little closer. Rectangles
Ugh, I just realized...

... I seem to be recreating that "cover flow" thing apple does.

Bleah.

What I'm actually going for is a "stage left" and "stage right" metaphor.

As actors and icons enter and leave from stage left & right there are
actual "zones" just off screen (that you can see when the soom register
is operating) where they actually reside.

I've spent most of the day fiddling with SVG transforms trying for a look
like documents "hanging" obliquely.  I'm not there yet, it just looks
like a weird play-school coever-flow..