I don't think it's a good idea, mainly because android is multiplatform and rust, by it's nature, is only available for what it's built for. Unless you are giving google your rust code to compile, your app will be limited on it's reach.
All that said.
Rust doesn't have a GC so it'd (likely) have a lower memory consumption and could possibly be lighter on the CPU.
Native compilation helps mainly with startup time and memory consumption. It's not exactly great for runtime performance as it takes away some key optimizations.
Another benefit of rust assuming you are distributing binaries is you'll be able to use the latest version of Rust rather than being pinned to older versions of the SDK with partial support based on the whims of google.
All that said.
Rust doesn't have a GC so it'd (likely) have a lower memory consumption and could possibly be lighter on the CPU.
Native compilation helps mainly with startup time and memory consumption. It's not exactly great for runtime performance as it takes away some key optimizations.
Another benefit of rust assuming you are distributing binaries is you'll be able to use the latest version of Rust rather than being pinned to older versions of the SDK with partial support based on the whims of google.