Hiho,
in the last time I've been pretty much searching for something like this plugin, so many thanks for making one!
But while testing I came across one thing I would love to have: being able to editing croping presets in the datatype. I had to change dimensions of crops several times while working on a design for a new web, and each time I had to delete the preset and make a new one with the same name.. So that would be a cool thing to have :)
Jan