The Sheriffs can change your login ID if they are requested to, and if the requested login ID is not in use.
Note that the login ID is only used for logging into the system. It is not used anywhere else in our system, and nobody gets to see it. So normally there is no reason to change it.
If you really want to get your login ID changed, send me a PM with the login ID you would prefer to have, and I will change it.