Originally Posted by
Raist
You actually had to be rank 6 in your starter nation to start RotZ--as in Shadow Lord fight (remember how that tied into DRK's back story? Oh wait...you had to complete most of WotG to fully appreciate it's back story...).
XI's content releases were not "separate"--parallel past certain points in the main story maybe, but not separate. All the other content you mentioned was also gated as well. Most everything in XI was gated behind something---any combination of 1 or more things would deny you access: reputation, nation rank, level, job, imperial standing, allied standing, mission/quest track, time of day (real life or in-game), season (real life or in-game), weather, moon phase... May be more. Those are just things off the top of my head.
Gating is far more common than I think some if you may realize. At least they were up front with Heavensward. Not like there wasn't any disclosure/disclaimer out there telling people they needed to progress to a certain point in the main story for access.