I like the way it is for GM's/Staff in general (because I was a GM);
When you hover your mouse over the "NON-EXISTING" text, it shows the ban reason from the list, nothing more than that, like nothing in detail. It just shows the same thing it does on the banlist. If this could be added into just the normal user's usergroup, that'd be awesome, but anything really past that, where it involves implementing something completely new just seems useless when all we have to do is add this feature to the normal usergroup.