Fancy Product Designer Multistep Product Configurator Another
This would really help with scaling problems also an option to Limit Modification (But allow scaling outside) meaning the added image / text is always contained in the bounding box but you can keep stretching it . As it stands you cant stretch to fill the bounding box in one drag or make it stretch so much for example the text or image is let's say "zoomed in".
Imagine a customer wants to take just a face from a full photograph of the family. They import the image of the family and try to enlarge it just to keep the one person and it's background but it is very, very difficult to accomplish. I will be needing to do this but I think that is a better example.