Well, the game certainly has a lot of really useless units in it and the more firepower they add to the game, the more useless units there will be, until all we are doing is move carrier groups around and launch nukes.

Historically, I really like the industrial age and anything that comes after that the most but yeah..

For the whole gameplay thing, anything before mass use of gunpowder is more interesting than what is happening "atm" =p