We have the ability to hide custom fields that are empty, but it would be even better if we could hide specific custom field folders from the contact screen.
For example, it would really helpful for archiving purposes if you have information you don't use anymore but want to hang on to. That way you don't have to click a button to hide blank fields, it could just be done automatically in an archive folder that's absent from the contact.
It could also really help out those who use custom fields for back-end automation for their clients and don't want their clients to mess with a folder containing the custom values.
Also, it would be really helpful if you have custom fields on forms as part of a template account that you don't want your client to have access to yet. That way to client doesn't see that in the contact profile.