I remember wishing for something like this when I started working in Illustrator after using things like rainmeter and hand-writing SVG code for ages. Of course, I don't have the patience or dedication to implement that sort of thing.

I'll definitely give it a go if I find the time. I love the idea.

If you could make it work with LaTex you could probably find some happy users in IEEE / ACM type communities that would use it for drawing figures in research publications. However, it probably won't take on unless it's made open-source (most researchers are on tight budgets already!)