Would it be possible to Transfer Background images directly between projects including the current settings for Transparency. As easy as copy and paste would be good.
Also a feature to crop the background image. Once established in the project it is sometimes very obvious that whole areas of the image will not be needed. This would be useful to dramatically reduce file size.
I think there are a few things to keep in mind when cropping images.
Depending on the image settings (DPI/resolution etc) the cropped image may not be smaller in file size. This often happens in image editing software's as well.
On the other hand, once the image is cropped, you would want to be able UN-crop?