I love playing as the Daimyos in D&T, it's awesome. It's such a shame it gets easy at some point. Anyway, I'd suggest either MiscMods, Death and Taxes or (if you can get it to work) The Steppe Wolf (AirotciV). All three are amazing mods, and I'd watch anything done with them. Also, the new D&T will have the Always War mod integrated, so an event pops up when you start the game asking if you want to switch to that mod.