Not sure if anyone has the time to work on this, but I would be happy to send a little money your way for a script similar to this for XenForo:
Basically it was written based off of this script: LGSL - http://www.greycube.com/site/download.php?list.10
Essentially I would like the features to be similar to that of the vBulletin plugin I posted above. If this is something someone would like to tackle, I would be happen to send $50 your way to produce and release this script to the public. Thank you so much .