You could either MF run, or baalrun to try and hit 99.
Here you get the 60 cap in a day and after you got inferno on farm.. what is it left to do in this game? I really don't like this lvl cap, it should take ages to hit the cap, not like WoW and just faceroll to 60 in a day. Don't know what they thought about there =/
Maybe adding PvP will give you something to do, but without a ladder system or balanced pvp I doubt it will be more than some fun thing you do to try out your new gear vs other players.