Tapper, on Mar 9 2009, 10:36 PM, said:
It really helps to tear down a metalworks or weaver and put up a second school.
That being said, there's not enough variation in land units - there's no unit that I absolutely WANT to get. The little differences between nations are nice touches though that do provide a different playstyle and tactics, and the small nations really pose a challenge. Baden-Wurttemberg and Westphalia ganged up on me with a full stack each not even 15 turns into the game... If only the AI could keep up in research

On sea in the campaign it's the exact opposite. Scaling up from a 6th to a 4th rate will instantly make you king of the sea if you're the first to do it - and there's extensive research required so you're probably the first to do it and free up the resources.
Then, the same happens when going from 4th to 2nd and then to 1st rate, and if you can outbuild the others by continuiing to keep 1 or 2 ships in the queue, you will outsize them and therefore outgun them easily.
All in all, I eagerly outwait the mods.
That's weird... I have only played my campaign as the British, but the AI seems to be keeping up with me, if not ahead in certain aspects of research, and I have like 6 unis.... (admittedly only 1 at the very start though)