if I have a project named "my_projet" and my user name is "harobed", currently the RhodeCode url is something like this : "http://example.com/my_project/".
My suggest is to append username in the repository path, like this "/harobed/my_project". Then other users can handle a project with the same name (here "my_project").
If Repositories location is "/home/hg/main/", on the file system, the repository path would be "/home/hg/main/harobed/my_project/". With user "foobar" : "/home/hg/main/foobar/my_project/".
What do you think about this suggestion ?