Modify Recruiting Options
Separate Recruiting abilities similar to Members Permissions (Recruiting All vs. individulal options: See Applications, Accept/Deny Applications, Modify Application/Settings, Assign Permissions Group). Mainly, deny Recruiters from being able to assign Permissions Group when approving if they do not have access to "Modify Members".
This is not currently planned functionality, but you could set a Launch Code that your recruiters can provide to new members – that way they would be added to the roster without permissions and a full admin could come by later and flag them with appropriate ones.