Adding planes and vehicles doesn't really "add" to the game over all, it just give you more choices. A change in the graphics, or new maps have a bigger over all effect. I'm thinking CT may create a bit of a hit due to all the new things they have going..... or are rumored to be going. The screen shot of the "city" was huge and will be a hit, as well as any "targets" I would think that are going to add for those big missions. All the AI bombers you might have to simulate the big raids I'm sure will cause a hit.