http://www.diablofans.com/blizz-tracker/topic/54913-please-separate-leaderboards-by-class
There are no Leaderboards planned at this time that would track Paragon levels (or even total experience gained) within a Season. It was a conscious choice on our end to shift Leaderboards for Seasonal characters away from a pure level grind towards more objective-based (or even skill-based) goals like Greater Rifts, Seasonal achievement points, and Conquests.
Standard caveat: This is all according to current design. Details and functionality subject to change pending testing and feedback.
This is actually one of the best decisions they’ve made with regards to Seasonal Leaderboards. High Paragon levels/experience is a meaningless indicator except for the amount of time one has played (though in D3′ case, there are areas of the game that could be run over and over ad nauseum to rack up XP. All it amounts to is a test of grinding will (or in other cases, letting a bot do the work).
