I love the hide empty fields option. But it would be way better for agencies to be able to hide custom fields and custom field folders from the contact screen AND the opportunity screen.
I'm thinking of people who use custom values for automation and don't want clients to mess with or see them, information that doesn't matter and is simply meant to be "Easy yeses" on forms, those with multiple pipelines that require different information on the opportunity card in each pipeline, and those who have a ton of folders that are cluttering up the contacts screen.
This would also be helpful in archiving old custom fields and cleaning up the contact screen by putting them into a folder and then hiding the folder so we don't see it in the contact screen.