I see this to be hugely practical. It will enable rapid charting in source code documentation, and also, solve the table formatting problem once and for all.
Edit: shapes? Patterns? Gradients? Dithering? (Think about cacao) lasso tool? Semantic movement? Like, w moves over all reddish blocks
Also I love the idea of semantic movement, I'll definitely put it on my feature-list!
Even if we go with monochrome charts, it will be super useful for describing data structures and visualizing algorithms.
Also, looking forward to the semantic movement implementation!
Relevant xkcd -- [https://xkcd.com/378/]
Jokes aside, maybe you can use that for inspiration :)
I'm wondering if artist-mode can be used as a minor mode? Charts everywhere :)