Assuming that we were to keep it, being able to set it in the cli (create/update) seems like it could be useful.  If an admin were to always set up new users using a script, if they wanted to use experimental they wouldn't have to go in to the UI to toggle it.  Also, if something experimental came in that they loved, they could use a script to easily change many users to use it.  While this may not be a common case, it seems reasonable.