Feature - arbitrary string passed to rdesktop

I too like Gnome-RDP a lot. A features that would make it even better is -- ability to specify an arbitrary string to pass to rdesktop (or other underlying program). This would allow the more obscure options to still be used, without necessarily waiting for somebody to add them to the GUI. Think 32-bit, console mode, experience level, etc. Passed to the underlying process in whatever position is appropriate to override conflicting options (either first or last depending on the underlying program).