Set zoom level as a property of path node

When using paths to navigate through a Prezi, the zoom level on text elements leaves an amount of margin around the text, when zooming on objects however there is no margin and the object fills the screen.

Very often, the object is a logo or some .swf text and full zooming is inappropriate. You are then forced surround the object with a frame. In this case the frame has no visual significance and is only there to set an appropriate zoom level.

It would be great if you could set the zoom level as a property of each path node (as a percentage). For Example: currently on objects the zoom level is 100%, but you could set this to 80% to leave margin or 120% zoom in further.