I would like to offer my client different upload sizes as default. and then they can choose, in which sizes they want to upload.
see yellow marks in image.
Right now it seems it is only none or all as default state.
I'm looking into this for a future update, probably using checkboxes to enable / disable each of the resize sets. Have to figure out the best UI approach for it so it is not too cluttered and confusing.
Just because you're not paranoid doesn't mean everybody isn't out to get you.