What I want to see is:
A tale that follows someone's point of view, hopefully Venat's, during the debate preceding Zodiark's Third Act, so that we get visibility into what the state of the world was at that specific moment of time and what the life of the planet that was on the line was like.
A tale told from Emet-Selch's point of view that reflects on the events of the whole game from an Ascian point of view after Zodiark is killed and he and Hytholodeus meet in the afterlife.
Something, anything, hopefully in one of the above stories I mentioned, that gives us more insight into Azem.
A report from a Meteion where she finds a planet that isn't depressing as hell but her report never makes it to the others for whatever reason.
The story of the Legatus who surrendered to the Eorzean forces off-screen and behind the scenes during the events of the Garlemald section of the expansion.