Too raw. Not enough nodes. Here are nodes which are missing:
- Direct texture input
- Apply glsl shader
- Tile result (any of algorithms to tile resulting picture across, with seam fixing)
- Masked blending (also show which blending mode does what)
- Heightmap topology detection (all of them - height lines, edge detection, normal detection)
Multiple palette types are missing. using png as palettes is only one of the many -
- microsoft PAL format
- ACT format
- Hopefully photoshop swatches format (ACO) should be there.
- Save/load icons on palette and in file dialog are garbage an not representative of what they suppose to mean - i strongly recommend to replace them with disk and folder icons you have
- For each value which can be adjusted via sliding add vertical ^V (up triangle/down triangle) icon to signify user that (s)he should drag it up or down for desired effect
That is all for now. I might add some more suggestions in the future once these will be considered and hopefully implemented.