I don't see lot of use of this, normally if people want buy resources on specif TS they look up leaderboards to see who they should talk to.
Only reason I see is those Horns of Plenty, as bonus is determined by a total number of TS levels. Could be nice to see how much bonus you would get and leaderboard to help you with it. However.. leaderboard fits only 50 people =S
So, I see point of both side, whatever we get it or not.