Allow Administrators to "Act" as another user within the same session in order to better support the application. For example if a user has inform us of an issue, we should be able to act as them and attempt to replicate the issue. For resolutions and customisations, we should be able to act as the user to test that a resolution is successful. For certain updates/customisations, it is not possible for administrators to test i.e. if it a specific access change to a security role, the only way to test this is to approach a user and get them to test it. What administrators should be able to do is make changes to a users profile, act as them to test the change. Change our own security role will not help as the admin role will override whatever additional role that has been provided. Removing the admin role will result in requiring someone with admin access to revert the admin role. In my opinion, the ability to act as a user (like SAP Ariba) would be a feature of huge benefit.