Non-destructive crop tool
The crop tool is fun to use with images, icons and more! But, it’s destructive—make a mistake and want to undo it later? It’s impossible unless you remembered to save the original. A non-destructive crop would be nice for ease of use and forgiving mistakes.
I’ve ended up avoiding the crop tool in favor of masking, because masking is non-destructive (even though the crop tool is a lot easier and more convenient).