One that allowed user group to be displayed, a different header/header footer based on group.
We have both of these in the old version of threads but I can't get them ported to 6.4 and remain sane. I been digging in the archives and we have some really cool mods that need to be ported. I been trying to update what I can or check them. some work right out of the box and some others are a bit more complex to add.
Guess I best see what Josh will charge me to update a couple of the past ones.