This seems to be an intresting and exciting but there are still things that must be considered.

One major concern is that at endgame the classes isnt perfectly balanced. One would say "x class" is op while others says his class is more op. So i suggest doing most of 1v1 by class. RvsR WvsW MvsM.

Another thing is that divide things by 10 or so to get most of lvls and class to have their own "top players"
Top 10 mage of endgame
top 10mage of " x level twink"

Etc. Etc.

After all the class spicifics then maybe you can add
Top 10 overall class.

Since the list is still empty i think its fair to enlist all players that participated first then those late comers will have to challenge those players in the list to get their name in it.

I honestly hope this would become a success since we got no new pvp content, having this kind of things isnt bad and would give more excitment.
GL