Well, you've done a stellar work, a shame it is gone unnoticed.
If may I suggest couple of things.
-for increasing popularity changing a name to something more catching (A.D.1135?) and making more comprehensible first post (L'Aigle first post is a great inspiration).
-for the scale of map, I honestly don't know if going as far as western Europe is a good idea. I would much prefer if more attention was given to the area of China-central Asia, because that would make this mod much more unique. I would gladly trade Hungary for, for example, Tibetan kingdoms.
-setting an exact historical date would increase the interest as well. So for example replacing Mongol empire with Khamag Mongol (蒙兀国).
-there are also quite of lot of free OSPs to choose from to increase the variety.