I know the game is called Total War, but the AI really needs to lay off. I picked France for my first serious grand campaign (I played around with Spain and Prussia to learn what was different from RTW/RTR). In the end, I figured Louis XIV would be pretty powerful and give me a good balance of sea and land action. Catholic Frenching Christ Almighty was I wrong (CFCA is a TM of France)--the French are a paper tiger with no capacity to protect her colonies and her homeland simultaneously, and is especially lacking in good research capacity (or I just got bad luck and spawned no gentlemen randomly until 1713).
All the minor German states except for Hannover and Saxony declared war on me, along with all the natives, along with the Austrians, Dutch and since 1721 the British. Spain has been utterly useless and has only succeeded at giving Britain an even bigger navy to blockade me with (although I suppose I should be thankful they actually honored their alliances and declared against my enemies instead of me). The last 15 years or so have consisted of me losing massive amounts of trade income due to these huge British and pirate fleets (seriously, the pirates have a 16 ship fleet--more than I have, consisting of mostly huge galleons and warships with a few captured trading ships). And the British have a fleet with three 4th rates and three 5th rates...I can't even begin to challenge it until my income increases. My net naval increase has been one captured Dutch 5th rate, and I have built a fourth rate and a fifth rate. Not nearly enough, and still spread out.
I've at least taken two Iroquois provinces and conquered Amsterdam along with Flanders, the Rhineland, and Wurttemburg (or however its spelled). However, nobody signs peace. Ever. I took 2/3 of the Iroquois, no peace. The Dutch refused to give me even one technology or 500 gold in exchange for sparing their capital from being conquered. Any diplomatic venture undertaken by the Court of Louis XIV since 1700 is an utter failure. Oh well, now I'm just smashing Dutch rebels every 3 turns until they realize independence is a pipe dream. And lamenting the plight of Louisiana under their new Cherokee overlords.
Wait, I take that back, I have had one diplomatic success. I managed to sign a single trade agreement with Prussia (which now controls anything in Germany I don't control except for Saxony, and most of Austria and Poland). And I had to fork over 300 gold to sweeten the pot enough for them to trade with me. However, its a small price to pay to improve relations and try and avoid another major war on my borders.