The language-rust project (Rust syntax highlighting) could need some assistance.
It’s an npm / Atom package I started from scratch several years ago and quite widely used (Atom, VSCode, GitHub, many others). I think it’s generally in good shape. There are some minor bugs (e.g. with nested generic parameters) and some missing features (e.g. no async/await syntax support yet), but nothing really bad. Unfortunately, I’m not a JS expert and especially with more special cases I’m lacking time and JS or npm (or Atom) knowledge for having answers to every issue.
Also, Rust is gaining popularity and so more people come to discuss things. Often people come from other languages or IDEs and sometimes complain about the editor switching to recommended settings (4 spaces, 99 chars), or not having enough snippets. I feel like some presence of the Rust community there would be nice so that there are more balanced opinions on these topics. Some help with PR reviews (most people sadly submit PRs without tests) would be nice too.