Beware. This method of adding and removing users is not safe at all. We've tried it more than 10 times with different tweaks but ALWAYS the sharing and permissions for some folders where a mess. We probably would not notice if we did not have to install tons of audio plugins, but these attempts revealed the problem so we gave up eventually.
So, for example some plugins failed to install presets. Why? Because '~/Application support/plugin folder' (and various other folders) had no access for current user, some access to 'wheel' user... and - for example - the right to read and/or wright for a 'sharing only' account! The one that supposedly only grants access for file sharing on the network and isn't even present on the machine otherwise! Or sometimes it was referring to temporary 'admin' user that was already deleted. Or otherwise - we could not figure out a pattern. But ALWAYS the thing did not go smoothly, always there was a mess with users and their rights. Needless to say 'first aid' in Disk Utility (that supposedly includes fixing of permissions) did not do anything, as if system was 'sure' everything was OK.
If not for those audio plugins we probably would seat on that bomb happily, because why would one even check such things otherwise? Apparently all standard apps where OK at least to some degree and we did not do a lot of other tests, but not one plugin from several different developers did not work and folder permissions where a complete mess.
So beware! The less 3rd party apps you use the more chances you have something broken under the hood as well, and you just don't know, waiting for the trouble to find you somewhere later...