[TwentyPosts]

Can't say much about async, since I really lack the experience to say whether async in Rust could feasibly and realistically be much better than it currently is. Some people say that it'd be great if it worked as effortlessly as in Go, but I assume that you don't get to have that without performance tradeoffs.

As for lifetimes, what's the issue? Do you have any reason to believe lifetimes are frustrating because they were badly designed, rather than the fact that they're making complexity explicit which was previously hidden?