I was always curious about how to improve that. In particular, I was curious about the idea of compiling a better, more structured language into a helm chart, to strike a balance between compatibility and maintainer experience. So I built helmtk and a new structured template language htkl, and some other tools along the way (the test suite in particular is super helpful).
(I'm actually planning to drop the hosted decompiler and just publish the prompts that back it, so if you're interested in that, send me an email at alex@helmtk.dev)