It would be awesome if not just the first image was croppable.
FYI - there is currently a description on every image upload field that says "After uploading an image you'll be able to crop it."
We should take that wording off since the current functionality is that the first image is the only one that is crop-able
I highly second the idea to make each image croppable - and resizable! As well as removing any instructions that create confusion.