Adding things to Rust needn’t increase the complexity. One of the features that should arrive in a year or so is the ability to use async functions everywhere,

Adding things to Rust needn’t increase the complexity. One of the features that should arrive in a year or so is the ability to use async functions everywhere, even in traits. Right now there’s additional complexity and difficulty for beginners to know that “ok, async only in free functions and import the crate async-trait if necessary”. Future learners of Rust will simply use async wherever. This is one example but there are other threads of work where what they’re adding brings more consistency across the language, making it easier to learn.