Move Selected Pixels mode must also allow resize of selected content
The first thing I missed within seconds of using ver 1.1 was that I could not adjust the size of the content inside the selected area as I often do after pasting a cut image from an external source. This is one of my most frequently used features in Paint.NET The Move Selected Pixels Mode should have handles to allow resizing of the selection and its contents before pasting.
Peter Cawkwell commented
Lack of this feature is a show stopper for me.
M.K. Mori commented
(If there isn't a separate "flip horizontal/vertical", be sure to allow scale handles to go negative, and snap to -1, perhaps with a modifier key....)