This isn't as big an issue for some players as for others, but I've always found being restricted to one or two general leveling paths tends to burn out altoholics like me. Before they added additional content for the mid-game in Lotro, it was extremely tedious trying out other classes once you got about level 12ish, because you pretty much had one path with only a few variations until you got close to cap. It was even worse in Rift. Essentially, I'm hoping for a wide enough variety of questing content and alternate ways to level. I know they want to focus on the Elder Game, but I like to try all the classes.