That's one thing I disliked about XI but I put up with it, there are time I want to solo, but the fact that they are "forcing" you to do something to progress, is no different than what they did at 1.0 launch when they put that Fatigue Barrier up that only resets once a week. ( yes the two are entirely different, but they share a common goal " They both force you to do something to progress) Why can't it be progress in level the way you want to? Your just going to get to the same thing at the end ( Max-level).In XI you where forced to group to progress
I love XI for what it was and what it did, I just didn't like the fact the 95% of what you did require some sort of party to get anywhere. There are times I just want to solo/duo even trio. There are times where I don't want to be in a cluster of people wacking at a crab in Valkurm Dunes. I love Choices, to have the freedom to level the way I want to level, not a system that tells you you "NEED" to do this to progress in level.
All in all, It really all boils down to how they implement the way to progress in level, how they handle the quest system. I'm sure it will turn out great and put some unease minds to rest.