Allow admins to rename the folders that hold ArcGIS Server's services (in 10.1).
I used to be able to do this as a config change in previous versions, but in 10.1, it seems you can't change this:
http://myServer/arcgis/rest/services/FolderA/service1/MapServerto
http://myServer/arcgis/rest/services/FolderB/service1/MapServerWe had a folder called ProductXWorld with numerous services running in it, but as things changed we wanted to change it to just World so it was not product-specific, and it seems this is not doable in 10.1 (according to esri-support) so it was suggested I request the enhancement here.
I could see this being useful for many other scenarios as well. Otherwise, it should be much more critically announced in the documentation that these names are written in stone, so more care is used when designing folder names.