In FH0.7, The Battle of Britain map is objective-based, and of course, like jan has said, it is full of exploits, making the gameplay very arcadish. The Brits usually sports an army of engineers tightening bolts around the objective buildings. The Germans relentlessly arriving with more Ju-88s (which is a bit unrealistic) and Stukas, escorted by a handful of Bf-109Es and Bf-110s, which are more interested in hunting than escorting. Maybe it is the only map where we can find Boulton-Paul Defiant reverse-firing fighters actively hunting enemy fighters. It is also the map where ramming your Hurricane to a fully crewed bomber actually rewarding. Since most will bail out when the plane's health is nearly depleted and deny you the kill.
Now, about ships-only map. One of the main factors why maps like Rheinuebung doesn't sell is that only few people gets to taste the action. The gun stations are very limited, and the ship captain usually steers the ship either aggressively close (therefore unrealistic boarding party action) or rather play BVR, where many sailors are just crowds aimlessly wandering around the deck. There are some scout planes, but a skilled AA gunners will easily shoot them down. I saw people using it to close the distance between ships, bail out, and perform Navy SEAL-like infiltration on unsuspecting enemy ships. Developers resorted to limit the kits to rifles and knives only, but people with insta-gib talent couldn't be prevented from unleashing their skills when they have successfully boarded your ship.
The problem with FH2 is, the map will be very small compared to FH0.7, and it has very limited draw distance.
Small maps not only hinder planes and fast-moving vehicles, but also tank combat. Tanks in FH2 feel more vulnerable because of the lack of space. Any guy with Pzfaust/Bazooka/PIAT can hide anywhere and still be within perfect distance to launch the warhead. Limited draw distance, like I experienced in Gazala not only kill the fun, but unrealistic as well, the enemy completely disappears from your screen despite being visibly bigger than your gun reticle. Allowing the enemy to escape easily.
Vehicles will have more devoted users in BF1942, because it also has a very limited FPS controls, very little eye candy: e.g. reload animation sequence not fully visible, no iron sights, funny playermodel physics... you could be sent flying hundred metres high if the explosions hits you hard enough. In Kharkov, I was standing in front of a T34-76, repairing it, suddenly a shot from a Panzer IVF1 bounced from the front hull, I was sent flying high, still alive holding the wrench, died on the ground, and counted as suicide. I'd rather be on track, than on foot.