Lgm

top-10 lists:

Bill:

1. Single-window interface. (This is by far the most often-requested feature.)
2. More control over window/dialog organization.
3. Color management.
4. Better painting tools.
5. Better support for metadata.
6. Different menu organization.
7. Layer effects.
8. Save for web.
9. Ability to organize/categorize resources such as brushes, gradients, palettes etc.
10. Better printing support.
11. Better tablet support.

Raphaël:

1. (by far) Single window interface, a.k.a. MDI. Note that there are two cases (Window-in-window MDI and Tabbed MDI that are probably mutually exclusive. Each option has its advantages and drawbacks, and each has its supporters who usually reject the other proposal:
   1. http://bugzilla.gnome.org/show_bug.cgi?id=7379
   2. http://bugzilla.gnome.org/show_bug.cgi?id=121087
2. Adjustment layers http://bugzilla.gnome.org/show_bug.cgi?id=79025
3. Layer trees or layer groups http://bugzilla.gnome.org/show_bug.cgi?id=86337
4. Avoid popup dialogs for tools, file plug-ins, etc.
   1. http://bugzilla.gnome.org/show_bug.cgi?id=85579
   2. http://bugzilla.gnome.org/show_bug.cgi?id=319963
5. Organize brushes, palettes, gradients... in categories http://bugzilla.gnome.org/show_bug.cgi?id=119874 ...and make it possible to delete or hide the default ones http://bugzilla.gnome.org/show_bug.cgi?id=118742
6. Save for web http://bugzilla.gnome.org/show_bug.cgi?id=98017
7. Better printing support (colors, one image on multiple pages, multiple images per page, ...)
8. Improvements to the text tool
   1. Support for multiple styles (font, size, color, ...) http://bugzilla.gnome.org/show_bug.cgi?id=122706
   2. Applying transformations on text http://bugzilla.gnome.org/show_bug.cgi?id=125144
   3. Text along path http://bugzilla.gnome.org/show_bug.cgi?id=169616
   4. Adjustable letter spacing http://bugzilla.gnome.org/show_bug.cgi?id=331952
9. Painting with "natural brushes" / simulate natural media http://bugzilla.gnome.org/show_bug.cgi?id=65118

ours, combining the both above:

1. (by far) Single window interface
2. Adjustment layers
3. Layer trees or layer groups
4. Better painting tools
5. Avoid popup dialogs for tools, file plug-ins, etc.
6. Organize brushes, palettes, gradients... in categories and make it possible to delete or hide the default ones
7. Save for web
8. Improvements to the text tool: typography, treat with/like paths
9. Painting with "natural brushes"
10. Better printing support