How come Black Marsh needed to bribe the Aldmeri Dominion? That place has never been successfully invaded; not even when the Empire was at the apex of its power. In no small part thanks to the Hist, I would imagine. I'd have thought their response to threats would be more along the lines of "Come at me, bro."
Forgive me if this is meant to be part of the mystery, because it could just be the hourglass is an in-game lie, but...why would Akatosh put all of his power into a Tamrielic artifact? He barely has any left after he, along with the other Divines, gave up the majority of their power to create the Earthbones.
And something not related to established lore; wouldn't any scholar character assume that Akatosh's hourglass might be in Akavir? That's where the majority of Cyrodiil's dragon-y stuff comes from, and the Nerevarine did disappear there after the events of Morrowind... 'Twould be difficult to create a scholar character if they're just looking for the best ship to Akavir. :v