I need to give to specific usegroups the possibility to ban a user from the frontend, and to limit this ban to a specific node (specific group of categories). I use XenCentral Multisite and i need to give the possibility to moderator to forum A to bans users only to nodes presents in forum A...etc. etc. I know that there are already an addon to do this but this i limited to only one forum. Maybe @borbole is interested to this...i can give him (or to anyone interested to code this) the right to resell this on Xenforo.