Developing systems takes a very different outlook than it does from developing libraries, and again very different from designing languages. Even though on projects when we have specific coding standards, there’s always often a benefit to supporting much more. I appreciate language designers needing to think at a much broader scale about the realm of possibilities than I normally need to for systems I develop.
My example of this appreciation is when I had to debug some java code via a remote terminal on a box where the unwanted behaviour emerged. I was actually thankful for being able to do an import java.util.*
rather than having to specify every single class that I wanted to use.