And may I add these again:
- finally get rid of the maximum of 16383 pixels for an image's size. We are not living in the 16-bit era anymore.
- 16 bit colour channels in stead of 8-bit
- adjustable fall-off for stroke shapes. Now they are static (e.g. from beginning to end), would be nice to adjust the starting point at least.

Not holding my breath though, seems only the features with "a large number of requests for such a feature" are (somewhat) realized...