Well, currently I have the following unit lines:
Chinese
Japanese
Korean(Shares a few units with Japan and China)
Indian
S.East Asian(Shares units with Indian and Chinese lines)
Nomadic(Starts with only Horsemen, later becomes like the Chinese Line, except for the Huns)
I've managed to get at least 1/3 of the units so that they reference existing units in game(although I haven't figured out how to reference the PTW Japanese Units...if anyone knows how..please share...because that would reduce the Unit Foldier size by ALOT)
The only units that are totally new are the Mongolian Horde units, the Ashigaru Footman, the Samurai Spearman, the Chinese Riflemen(WW1, WW2), the Tiger Warrior, the War Elephents(Rider, Archer, Cavalry), the Naval(Junk, Cannon Junk, War Tiger, Steam Tiger) and the Unique Units(Nak Rohp, Mahout, Firelancer, Turtleship, Hwarang, Shaolin Monk)