I just beat the initial three kingdoms' campaigns and unlocked the Jin one. I do like what they've done, it gives you a much better overview of... the strategic side of it all? And there's some good character development. It's just that a lot of the characters don't even get used, and I don't know if I like that. I can see now why there's no Yuan Shao/Dong Zhuo/Lu Bu/Nanman/Yellow Turban campaign, as they're keeping it accurate (ie, if your side lost that battle in history, it's gonna lose it in this) so I don't mind too much.

I also do like that they've added Jin as a fourth force. I'm glad that the badassery of Wei through the likes of Xiahou Dun and Zhang Liao has been split off from the utter ponce that is Sima Yi.