I'll second Roger's suggestion for this addition.  Badly needed in my
opinion. I'm constantly getting automatic messages about domain names
being changed.  UIUC is sending these out on a regular basis.
Of course, wildcards for userids should be supported. :-)
 
>LISTSERV Wish List
>October 15, 1995
 
>(1) A simple command to change the address of a subscriber (e.g.,
>CHANGE listname old-addr new-addr).  List owners could use it on
>their own list.  LISTSERV postmasters could use it on all lists
>on a server.  The advantage over subscribing and unsubscribing is
>that users settings would be preserved.  The advantage over
>issuing a GET and editing the list of subscribers is that it's
>safer and would work on multiple lists.