Support user accounts

I was told in the forum to bring this wish better here. I do not know if it is proper to do so, but here it is: I think since L5 is a computer it would be great if it could support User accounts (not only for ssh). If the system has say user purism and user antonis then at bootup the lock screen could present a choice of the user to login. This will allow people not only to share the phone, but as a computer to give it to a kid to play without being afraid that the kid will delete or mess up settings. Incoming calls should work for all users. The default user "purism" should also be possible to rename. Currently, of course it can renamed on the commandline but people do not seem to know what are all the configuration files that need to be changed for this to work. Thank you.