It would be nice if there was a local guest account (external access forbidden) for temporary users. For example, someone that's visiting that just wants to turn on a football game. It shouldn't save preferences (or just delete them on log off) and as a matter of rule, is read-only. Basically think "do no harm" access level. It would also be nice to be able to enable/disable this guest account quickly (e.g. visitors coming over).   I would also use it for testing purposes so, for example, tes