Admin Rights - View SiteCatalyst as particular user group

[#1]

It would be great as an admin to troubleshoot with a user while under the same report viewing constraints.  

For admins only, there should be a dropdown in the menu bar where you can change what group you are viewing SiteCatalyst.  This would prevent us from having to create a dummy user under that group, or from having to review that group's settings.

[#2]

Bugzilla has a feature like this ("impersonate user"). The user gets a message per mail if somebody impersonates him (which is a nice security feature).