The sugar is real nice with async/await, plus some performance improvements. I got all excited upon release and moved my backend over to async, do somewhat regret not waiting 6 months.

Docs are sparse, this is across all the various crates needed, a bunch of required interoperable parts all needing specific alpha versions or separate preview crates.

Can't deny it's not user friendly right now. Very much early days.

Regardless, a lot of effort was put into the design and have to respect core devs for that. Think it was the most discussed/debated feature ever.