Just finished first Campaign as Shimazu. Stayed Buddhist and took the two island's first. Instead of going north and working my way along through the Mori Clan (Who were allied with the Takeda), I took a full stack with Matsuke/Ninja and Monk on 10 ships to the South East until I found the province with the Gold Mine! (Just East of the Oda clan). Fortunately it was owned by Rebels at the time and so it caused no unwanted conflicts. A very useful 2,500 worth every turn. Had a message about having a seperated province but quickly took another and held it until a reinforcing army went and took the province just west of the Oda clan and slowly took anything that wasn't Takeda. Oda eventually declared war on me but with an army west and east of them, I was able to squeeze them until they popped.
The Shogun grew wary of me until he called for all the clans to stop me. So Takeda forced me towards Kyoto by declaring war on me and not liking their provinces as neighbour's, I took them. Noticed that Kyoto wasn't well stacked and just went for it. Mori had luckily broken their alliance with Takeda by then and allied with me. Had some problems with Pirate fleets messing with my trade routes and had to rush some ships back to keep the money coming in. Nice suprise about having to hold Kyoto for a year! Mori eventually stabbed me in the back but by then I had a third stack led by my legendary Daimyo aged 74! and a Legendary Katana Samurai. Aftr a couple of tough battles with Mori and taking half their lands off them, I won. Nice to have to rank 5 Ashiguru from Kyoto.
Saving that save game for later after exploring other clans.