I think making this command would be redundant because if they still can not do any thing on the server, they will just leave and probably never come back or come back and ask to be changed back. It is really better to use the ban command. How ever a to set a !minge command that runs "ulx adduser 'playername' 'minge'" could easily be made but the time limit and reason system would be a bit harder. So in short just use ban, and set a time.