From 1 - 50 and then the credits is the "front half" of ARR. That's one complete story. Then you get the Back half, all level 50 requirement, no exp rewarded. Until the credits roll again, and your in heavensward. That's actually the BETTER story from ARR. It's a full year of material, just like the front half was a full year of material.

I know, you want to just be in heavensward, but your only half way, you have another year of content to get through. HW, SB, and ShB are all laid out in this way.