First off, what does the Kingdoms expansion do to my regular campaigns, and how much does it add? Do most of the mods work for Kingdoms? What is the best mod in your opinion for vanilla MTW 2, and what is the best mod in your opinion for MTW 2 Kingdoms?

I am getting tired of the regular game and haven't even beaten it yet. I am trying to spice things up. It's weird that I am getting burned out so fast since I love all Total War games. This is by no way a knock on the game. The game rocks. I just think it has room for improvement and am wondering if you guys have suggestions.

Thanks for any and ALL responses.