Not as part of the official Rust project, of course. But it would be nice to see some exploration of what a "reskin" of Rust-like semantics with a different syntax could look like. Kind of like some languages, e.g. VB.NET or Nim are little more than "reskins" of others, in ways that arguably make them more intuitive than the original.

Not the OP, but: lots of sigils. Dozens of macros.

It's a huge language.