Well somethings that might need to be corrected in the next patch or two are:
Uhlans are UP (i mean, a bit cheaper than hussar, 100 less hp, 7 more attack)
Organ guns need a slight increase in power
Some cards/ unique techs might need to be changed (ie code napoleon for french hardly affects it, +50% building cost, all for a measly +10% gather rate, which is hardly noticed as french.
Settler wagons need to be changed, they gather at 1.75 times the rate of settlers, and take up 2 pop slots and cost 200 resources, rather than the settlers 1 and 100.
(This I know, I have observed settler wagons, settlers and courers at crates. Settlers gather 20, coureurs 25, and settler wagons 37.5)
Native scout/ treasure guardian xp needs to be changed. You get 14 xp for killing a native scout, and only 9 xp for killing an outlaw rifleman. A native scout has 120hp, 10% ranged resist, 5 attack, 5.5 speed, an Outlaw rifleman has 240 hp, 30 ranged attack, 30% ranged resistance, and you get more xp for the native scout.
Cav archers need a slight improvement (ie maybe a little more attack, or higher bonus vs cavalry)
The Ruyter artillery bonus is basically pointless, it only affects ranged attack, and as we all know, artillery have 75% ranged resistance. If it affected melee attack aswell, there would be no problems.
Culverins. Culverins have a high bonus vs artillery and ships, 4x and 4x, which implies that they are the units to use them against. Well falconets have a bonus vs ships so that negates the culverin use, and the culverins have poor attack, and the artillery bonus is useful, but I would rather have a falconet than culverin.
Culverins should have improved attack +bonus vs ships or maybe artillery, and falc bonus vs ships should be decreased. All through history, culverins have been used against ships and artillery. Coastal towns always had culverins in their percussion locks and cannon towers, and most ships that spring to mind (20, 30, 50, 70, 100, 120 gunner, privateer, most merchantmen, and some pirates) always had culverins. To me this implies that : They are good vs ships, they are cheap, or quick to build to be so widely produced, or they fire fast, or they are uber powerful, or they are very light and so move quickly.
Either way something about them had to be good, and I feel that this just doesn't show up in the game.
These are my ideas, everyone else please post all of your ideas you think have been OVERLOOKED (PLEASE, only the ones that have been overlooked, NO1 WANTS TO HEAR THAT FRENCH ARE OP, WE ALREADY KNOW)
Also please tell me what you think.
Cheers