It would be nice to add “hidden” as a type for User Fields. For someone like us who uses the API a lot this could be an advantage to pass some parameters around that we don’t necessarily need the user to edit.
Also would be great if we can add regex accepted patterns for fields. For example we have a Custom Field called Riot ID which is always Something#XXXX (XXXX = 4 digit number). It just helps keep the data sanitized.