Shogun mod for MTW

I respect the coming of the new game, and I will buy it simply because the CA's battle engine is the most accurate and fun representation of open warfare out there. But I am at heart, as I know many others who play the game are as well, a japanophile. And we know that no matter how amazing MTW is, the expertly designed fudal japanese theme is going to be sorely missed. That's not to mention the personal glee of sending Ninjas and Geishas to dispose of your enemies either.
To me the answer is simple, an official Shogun mod for the MTW engine. Changing the battle engine will be the easiest part. Some new maps, some new sprites and stats, just port over the soundFXs if you want, and that's it. The front end part of the single player game will be a bit more work. Graphics, portaits, menus mebbe some new music. The overall map of Japan could stay the same actually. Then you'd just have to re-implement the Ninja/Geisha stuff. Sounds like very little work to make gobs of cash. Say a $20 - $29 addon? Oh yeah, bring it on.