Would you mind to explain what sort of problems that would be? If we need special command-line switches, we can as well stick to the current solution. As far as I know, the remote feature of mozilla works by looking for a mozilla window in the current X session. I don't see what problem that could cause on a multi-user machine.
I don't know about problems on multi-user machines, but I've had problems when I tried to display Mozilla instances running on different machines in the same X session. IIRC there was even a problem running an MS Windows native Mozilla together with a Unix-mozilla via Cygwin's X server.
-- "Codito ergo sum" Roel Schroeven
