It would be cool! Lack of sources seems to be a major issue holding companies back, as sadly Osprey did not delve into Chinese history very far (hopefully we can move beyond Osprey sources as a whole anyway in the near future, their information is often quite dated now). Wonderful armies to paint though, and they have a ton of fantasy usages in addition to their historical ones (for instance the... umm, have to look this up... Cathay factions in the Warhammer universe are rather obviously Chinese inspired).