I would like to write code for latexml to translate a package but I found the documentation to be hard to understand. That might be what is holding developers back. I looked at this a year ago and gave up.
Tell us what you would need described in a tutorial to be productive, as well as your background with the technologies involved (TeX/LaTeX, perl, XML, XSLT, HTML). Probably best as a new issue:
dginev|2 months ago
https://github.com/brucemiller/LaTeXML/issues
It's a pretty deep rabbit hole, but I wholeheartedly agree most standard package support incantations should be easy and few to use.