I do forsee Rust getting a Coffeescript of its own. I'm in love with the control flow model of the language but always felt some things that were in from day one (like double colon :: namespace delimiters, ampersand references, asterisk pointers and dereferencing, semicolons, curly braces, etc) were just wholesale copied from the languages de jour of the day because the focus was on the borrow checker as an innovative feature. So the semantics and ergonomics were completely phoned in early on, and by the time the modern development process around the language and compiler matured the glyphs were so totally entrenched there was no way to reconsider any of it.
A syntactic wrapper that gives you the types and behaviors of Rust with beautification like whitespace significance over mandatory brace delimiters and semicolons (like Python) with single colon (or maybe even dot) namespacing and such would be an insanely hard project (because parsing Rust is already insanely hard, and a lot of work went into minimizing compiler passes to parse grammar so keeping that with less control characters to work with in an intuitive way sounds like a substantial exercise in ergonomics) that compiled to ugly normal Rust would be fantastic to help newbies avoid the "glyphic overload" I easily see happen to anyone I try to preach Rust to.