Well, I enjoy realistic situations. For example in the t and b 'fun' that people crave so much, instant action is not possible for a plane like the p40b. Sure you can do it, but you are gonna end up toast if you dont have 9 to 2 odds. You need to climb at least 10k if you want to rtb.
If you dont care about rtb, or being able to fly a plane the way it was historically, *(who the hell wants to fly a p47 at 1k against niks?) then staying in the MA shouldnt be a problem for you.
Now that being said, the best way I see to have fun in this game is to use the aircraft for the strategy and roles it was used in the war. P40b is again a great example. Keep your speed and alt up, and you are unstoppable by early war japanese aircraft. Even if they are at 25k and you are at 10k, they cannot get you if you play it smart (wait till they dive on you then dive into a reverse, they bleed all their E trying to turn with you, end up below you cause they are compressing, and you are doing 400 mph in the opposite direction).
Of course this takes patience, but it is very worthwhile to experience the strat that those guys figured out in the RL planes.
If you want to up into furballs, go to the ma, pull out your 205, nik, or la7 and enjoy. Dogfighting at 1k in a ta152 or 190d is not what the designers of those airplanes had in mind. You dont need a 30mm cannon to take a fighter down.
As far as the b17 guns are concerned, they need to do something about that. Even I admit they are way way to 'laser'. What they need to do is beef up the airframe and make the unmanned guns much much worse shots.