Maybe we don't need everything under the sun in the stdlib?

It seems fine to me to just continue to create new Rust Python libraries using PyO3 and have them available as 3rd party packages. Python is kind of a weird language in that it bundles so much ... cruft ... into the standard library. There is or was a lot of unloved random code in there for no particular reason and I'm not sure it needs more of that.

If you want to use Rust in core CPython, of course, my proposal doesn't help. But if all we're talking about is some modules, they can live out of tree.