Well, they are in a weird position as most players already have the majority if not all of their leveling out of the way. At this point, it will be incredibly hard to please everyone. If they slow it down too much, new players coming into the game will be pissed if it takes forever to catch up with their friends and there will be the players who will feel like they missed out because they didn't catch the boat when leveling was easier etc...

They need to strike a balance and make sure players have methods besides grinding and leves before they slow it down too much imo... They need to ensure leveling can be a fun process for everyone, and have plenty to do along the way... Maybe in 2.0 ^_^