I didn't say there needed to be 'world ending' events. But we know that there are a mass of dragons hearing a 'song' and they are gathering...why wouldn't we be able to see them grouping up, or hear their song we have been 'blessed' by Midgardsomr. And I know its an expansion, however the only continuation of story will likely by the Ascian Arc, every thing else will probably conclude in the coming patch; leaving us open for the Ishgard Arc.

Guild Wars does these kinds of world events once in a while and the world doesn't completely change but if it serves as an incentive to log on and see the spectacle and participate in events that lead up to the next new story arc. Its not unheard of and XIV was not the first and only MMO to do something like this (on the scale of 1.0 to 2.0 yes) but the general idea of it is not too new.