It's pretty pathetic that they put those crappy story add-ons as a requirement. I would understand if perhaps they decide to expand on that content but if they have no plans of adjusting those story add-ons they shouldn't be required. After the first one I didn't bother with the other two.

As for abyssea I can understand those being required since for one it is decent content and they have been adjusting the content so it makes sense why they would need it. Though I'm quite confused of the other requirements. It just feels like they are using this as a method to make money unless they note that they plan on adding on to those stories to make the content as worthwhile as abyssea.