I've played all of the 'Great Clans,' and I think that the Date stick out as the best. Update: Conquered Kyoto,Became Shogun, Captured the Black Ship, Most of Japan's Clans declare war on me, Happy Ending. NOTE: All my cities have been fully developed (the level Fortress was reached only in my capital and another province) Now I plan to take Kyoto with all the armies I've assembled. If you take a defensive temperament at the start as Shimazu after you conquer the Ito,and take control of all trade posts,it will be highly profitable. I had a Full Stack army comprising of highly trained Samurai,Four units of those combat ninjas,6 matchlock ashigaru and 3 european cannons with a 15 stack army nearby comprising of mainly Yari Ashigaru, Bow Ashigaru and maybe some samurai.
Until finally I had 16000 Koku in my treasury with a 1900 Koku income per turn on Normal tax rate and 3300 Koku Income on V.High.
I kept building up my economy and mastering The Way of Chi. After embracing Christianity,i took control over ALL trade posts in the Seas of Japan,and Instead of going on the offensive,I allied with the Shoni and the Sagara. You see,yesterday I started a new campaign as the Shimazu, and sent all of my starting forces to capture the 2 Ito provinces nearby.