I definitely think we need to fill in our history, if Shyriath would be willing to help. It is somewhat chilling to go through the list of fictional Kaisers and see that most of them, apparently, did nothing.
Oh, they did stuff. It just hasn't been thought of yet.
But the Kaiser is quite correct here; it is a very, very large series of holes to fill. Especially since it's not just the reigns of Kaisers that must be recounted... a really good history has to take into account the many factors that can affect the course of events. The reigns of leaders, yes, but also the movements of the people, the vagaries of weather and climate, disturbances from both internal unrest and external invasion.
Unfortunately, to get that kind of fleshing-out in any reasonable amount of time, you need many people coming up with ideas, debating them, reconciling them. This hasn't proven a particularly popular pastime, unfortunately.
And, like Bill says, there's Apollonian stuff to work in there too, and getting two well-established histories to mesh presents its own problems.
I think we can pull it off, though. 
NO farting in the Atheneum!
I got whipped plenty when you were Kaiser!