I expect Rust being documented here,
https://developer.android.com/ndk
I expect the whole Rust build process being part of Android Studio, including mixed language debugging between Java, Kotlin and Rust.
I expect all NDK APIs to have Rust bidding crates.
I expect that Android developer forums also care to support devs using Rust.
And anything else that I forgot to mentioned, that is provided for Java, Kotlin, C and C++.