Thank you very much! You'll be happy to hear that the next version, v0.9, will have shape tools and an overhauled selection system. We'll also keep in mind your suggestion about zooming. Can you clarify on what you mean by a color selection map?
Basically some sort of color wheel/triangle/square/whatever shaped map to select colors from and sliders such as value, hue, saturation, luminosity, alpha. These are for selection your colors and making your own pallette in the program itself and it's a standard for painting software.
I’d like to second the suggestion about zooming. Yesterday I was trying to find a way to have the preview window at 200% and I didn’t find a way. It’s very easy to set it at weird zoom levels that produce pixel artifacts.
Thank you for the effort you make in replying to so many comments.