I figured the point of guest mode was that other people could sign into their accounts and, when done, it would return to the previous state. Instead, exiting guest mode signs out of everything, so as the owner I have to sign into all my accounts again, which is annoying and time-consuming. Stashing those logins instead would be far more convenient. Otherwise, how does guest mode differ from simply signing out? It has the "Auto logout on this date" feature, which is nice, but it's severely hampered by having to login to all services again.