Yeah, XI's Mission (and XIV's main Scenario/GC Umbral Era stuff) is just mission progression for the main storyline, which is done with a lot more care than you see in other MMOs in regards to quest chaining. Quest Chaining is just a series of generic quests that pushes you from one location to the next, rarely presented in a quality manner.

That's my only real gripe with it, it's never presented well and it's hard to believe SE will present it well too, since their whole focal point is making this a 'standard mmo'.