Problem 1: Queues. Players who must wait, to play the game
Problem 2: Layering. Want to get all realms down to 1 layer
Problem 3: Word PvP balance (at 60? at al levels?)
Blizzard is doing these problems in this order. To them, there’s no point attacking problem 3 now, if their problem 1 “fix” changes the details of problem 3 significantly (forum players say it has).
Blizzard’s “attempted fix” to Problem 1 is free realm transfers. Since they just announced a new set of those October 17, it is clear that Blizzard is still working on Problem 1 at this time.
They will address 2 and 3 when the realm transfers are over.