There were several discussion this year at ThwackCamp amongst the Head Geeks and MVP's about Role Based Access Control and permissions. Here is a excel document to help maintain a policy for the various roles you have within your organization. If you have suggestions, comments, or further development on this please let me know. I am also interested in how you have your roles set for your organization. If you could share please do, if you do not want to put it out to everyone please send me a PM here.
Maybe next year at ThwackCamp we can have some small groups to discuss this and see how things line up in the hopes Solarwinds can prepackage standard RBAC groups and permissions.
Additional Reading on this topic: