Include Job Roles in Group Administration

Currently, any planner creating a project can see every single job role in the Workfront instance. Across a large organisation, this can be an extensive list with many similar job roles. It would be great if job roles could be global (as is) or associated with a specific group, and only members of that group could see the job role. The group administrator could also be given the ability to update the rate/name/description of only job roles associated with the groups they administer.