[kibwen]

Don't hold back! :) Criticism helps us improve, as long as you can make it constructive and make at least a cursory effort to understand Rust's goals. As I've said elsewhere, if memory safety isn't a priority for your product then Rust may not be for you.

As for the lifetime annotations, we could be extending lifetime elision to more places, including to struct definitions, if people come up with rules that are easy enough to understand. I'd probably be for it, but there are others who think that if you go too far toward removing lifetime annotations then you actually make programs more difficult to understand and the language harder to teach. But that was also the argument against our current lifetime elision rules, which are pretty fantastic in retrospect, so I'm not particularly swayed.

[Jweb_Guru]

I hate our current lifetime elision rules, as do many people who have been using Rust for a while. There was an RFC (which was closed) to add some back. IMO, the rules largely exist for the sake of making short examples look less threatening, rather than because they actually make Rust more usable.