Time functions are a prefect example of somewhere there should be expanded support for in the STD. I'm also of the opinion that there should be a generic and reasonable async runtime in STD, since having `async` in the language, but to direct way to use it without a crate or writing your own executor is awkward.

Then there are things like serialization and logging, which I like the idea of having promoted crates which are essentially just better advertised for newcomers. (Maybe included in the distribution already in some way).