Oh jimmy, I've got to admire your persistence in typing such long post via the one finger method. Have you considered trying a typing program such as Mavis Beacon to learn how to use all your fingers? If you really want, an old dog can learn new tricks.

Anyway, the mod you are suggesting sounds like an interesting mix of Shogun Total War and Medieval Total War. First get your own house in order (the STW part), and then conquer others (the MTW part). Alas, I've no time or talent to take on such a task.