It depends on the aesthetics of the language I think. What are core concepts that you must know? (there should be few). Striking the right balance is hard.

Code is read a lot more than is written in my experience, so saving time writing it is optimizing for the wrong thing.

Languages with much inference for me REQUIRE IDEs that help you see what the code is actually doing. Forget about using a text editor or reading a diff and getting what the implications are.