After digging around in the code there does not appear to be a way to do this currently. What’s needed is a filter hook that allows the $this_users array to be altered so that the display value can be changed.
I can’t say if this is something that the developer wants to add, I’m assuming he’d want it to work withing the existing hooks and I honestly don’t know if that can be done. I’ll see if I can get his attention/opinion.
