Me again...

It would also be nice to specify whether an object's transition (animated transitions only) happens across the entire artboard or only within the objects own footprint. The effect would be similar to the Linear Wipe effect in After Effects.

e.g. I have a solid element on the right that should slide left, BUT the slide happens only within the space it occupies - effectively making it appear to disappear behind an invisible element at it's left hand edge.