Yeah, not very innovating. Of course you have new units and buidings, but it's the same old same old if you catch my drift. Not that i didn't enjoy ravaging the British isles, but i really thought the huge campaigns in the original game had much more to offer, like fighting in the snow, in the desert, in the mountains, in grasslands, you name it. and of course there was a much larger variety in units. But for an addon it's okay i guess.
What i'm really waiting for however is the next game in line: Rome-total war. If you have seen some of the screenshots you'll know exactly why.