I'm not sure I agree with the suggestion that the Warriors of Darkness are the characters in the 1.0 opening movie... Those same characters are shown in the End of an Era/first half of the 2.0 opening movie, and again in Heavensward's opening movie, all shown going through the specific story lines we've been put through, and there doesn't seem to be anything to suggest that this other world and its warriors lead identical adventures (especially at the point where the Warriors of Darkness were introduced -during- the Nidhogg story).

The adventurers in the cinematic movies are representations of us the players, Warriors of Light working together. The Warriors of Darkness are simply the "alternate/split world" equivalent of us. That's why they look identical to the characters in the opening movies with the exception of their gear color scheme.

That aside, I can't say I haven't enjoyed the story beats thus far. I can understand having wanted the Warriors of Darkness line to have stretched out longer because the idea was intriguing, but it seems clear that the over-arching plot is still focused on the Ascians, and that the whole Ishard/Nidhogg and Warrior of Darkness beats were merely orchestrations in whatever their grand design might be. I know we separate the game out into 1.x, 2.x, and 3.x versions and story arcs, but it seems clear that there's one over-arching story (at least from 1.2x onwards) that we've yet to actually conclude, and may in fact not conclude until the game is brought to a "close" in a manner similar to FFXI.