The game is really good. I'm starting as the Chokosabe (sp?) they are the in Shikoku island, which is relatively isolated and easy to defend as a starting point. They are master bowmen, which I'm a big fan of. I've nearly secured the island. Deciding if I should backstab my ally on the island or let him continue existing. Anyway, I'm just doing a short campaign to get a feel for it, then I'll take on a harder clan.
One very cool thing is that instead of the random bonuses generals get if older TW games, you actually gain experience and get to pick the bonuses you want, giving it a little more RPG feel to developing your guys. That way you can pick to buff their individual fighting skills, their overall combat leadership, or their non-combat leadership skills.