I'd be tempted to pick Rust for a greenfield project even if I had only a team of C++ devs with no prior Rust experience. Having one person that can teach it would help, but it's not an absolute necessity. And luckily every team has that one person ho is the Rust evangelist...
If you can program C++ you'll pick upp Rust more quickly than any other convert. Unless it's a startup with a short runway where you might not have the luxury of a slower start, then I think it would probably pay of in both productivity, staff retention, ease of recruiting (later), and a lot of other parameters.
If you can program C++ you'll pick upp Rust more quickly than any other convert. Unless it's a startup with a short runway where you might not have the luxury of a slower start, then I think it would probably pay of in both productivity, staff retention, ease of recruiting (later), and a lot of other parameters.