Would certainly help with the wild return and type signatures I've had to write involving combinations of `Pin` `Box` & `Future<Output = Result<...>>`.

I think Rust futures are really awesome as they expose the lower level details of how async behavior works, giving the developer the flexibility to adapt it to their use case - but the standard library really dropped the ball on standardized usage/types.

For instance, can we please just have `AsyncRead` and `AsyncWrite` traits? Can they also be easy to implement (are just `async read()`)?

Right now you have to use adapters between Tokio types and the Futures crate and they both offer their own non-interoperable read/write traits.