Two related feature requests on the user list:

first is simple, add pagination to the bottom of the list as well as the top
(typically you scroll down your user list to find one, then if it's not there
you go to the next page. Currently you have to scroll back up to the top to
change pages)

second I understand would be more complex, but the ability to change the sort
order, so you could list by UID or date added or something, would be helpful.
Filtering solves most situations but isn't always ideal.