Interesting, for me the "between Rust and Go" would be a nice fit for Swift or Zig. I've always quite liked the language design of Swift, it's bad that it didn't really take off that much
Zig really aims to be great at things I don't imagine Rue being useful for, though. But there's lots of good stuff there.
And lots of respect to Swift as well, it and Hylo are also major inspiration for me here.
I also find that D is good between language. You can do high level or low level whenever you need it.
You can also do some inbetween systems programming in C# if you don’t care about a VM or msft.
C# Native AOT gets rid of the JIT and gives you a pretty good perf+memory profile compared to the past.
It's mostly the stigma of .NET Framework legacy systems that put people off, but modern C# projects are a breeze.
I’m looking forward to seeing how it shapes out over the next few years. Especially once they release union types.
NativeAOT's primary goal is reducing memory footprint, binary size, making "run many methods once or rarely" much faster (CLI and GUI applications, serverless functions) and also shipping to targets where JIT is not allowed or undesirable. It can also be used to ship native dynamically or statically (the latter is tricky) linked libraries.