I’m curious, have you used Rust much? Most of those changes just feel like “rust should be more familiar to me” changes.

Also:

As Rust 2.0 is not going to happen, Rust users will never get these language design fixes

Isn’t necessarily true for most of your suggestions. Since most of them are just changes to syntax semantics and not language semantics they could be made in an edition.

Edit: Oh, I just saw your budget. This is ~$800, so maybe not.

There’s the Starlite 5: https://us.starlabs.systems/products/starlite?variant=55242571612540

I’ve got one. It’s got an x86 processor and runs standard fedora just fine, including pen input.

Though, I don’t use it for much because I haven’t found any note-taking software that I actually like using. I used something back in college that just created SVG pages in an HTML notebook which I absolutely loved, but I can’t find it now. It wasn’t open source so I’m guessing it might have just died.