As you know, XenForo doesn't track user's thread count. (Reference @Mike 's this post)
So, I just created this add-on for showing user's thread count in a few areas.
This add-on calculate all users' thread counts and save them to "xf_user.thread_count" every midnight.
Working on real time subtract count but not figured out yet.
Realtime Count-up Thread Count Support (v.0.1.0)
Usergroup Promotion Support (v.0.0.2)
Notable Members Page (DEMO)
Sidebar Visitor Panel
Profile Page and MemberCard
Style Properties Option for Showing on Messages' Info