I don’t believe Rust is that good at maintainability - refactors are safe, but they are very tedious, which is inherent to its low-level nature. In a managed language if a refactor causes different lifetimes/ownership model, the runtime will automatically handle it. In Rust you will have to fight the borrow checker for it.

Don’t get me wrong, Rust is a really great language, but if the domain doesn’t require low-level programming, don’t choose a low-level lang, in my opinion.