Perhaps off subject but I think there is a need for a non-destructive, functional script-based image editor. I find, as a programmer, I prefer using ImageMagick when I can. Wouldn't it be nice to have the intuition of a UI backed by scripting? Imagine that at each step in your function, you can tweak it using traditional ui tools and the "tweaks" are automatically reflected in the script. To get the final export, you simply use the original image as the argument of your function.

Or perhaps such a thing already exists. If so, I'd like to see it.