I would like to see different saved planes in the view ball pull-down. I would also like to have the origins of each plane created maintained. problem I just experienced for the millionth time: Create a plane from and object and it has it's own origin. Go back to the top plane and your using the origin you made for the other plane. Your working with snap to plane. All your parts are in space!

The origins should be associated with the plane your in. Also it'd be nice to be able to set the origin of the plane to the origin with one click.