Thank you!
Perhaps I'm using the wrong terminology. By "svn root repo" I meant the "server name" part of "http://<server name>/svn/<repo name>". If I open a location at "http://<server1>/svn/<repo1>", and then a load of URLs under "http://<server2>/svn/<repo2>", "repo1" will get pushed off the end of the list. I commonly work with several servers and quite a number of different repos in each server, so being able to keep the server/repo combinations (or at least all the servers) would be a big help for me.
I hope that may be more clear? Or perhaps you did understand me and I don't get the limitation you're talking about. If it's the latter, sorry.
A longer URL history will help with my concern above, regardless.