I personally know that a big turnoff for newcomers is the chess board teams. The commercial gives the impression of P-51's vs. 109's; Zekes vs. Corsairs, etc.....you know, the whole good vs. evil thing. Lose a lot of folks right off the bat right there. AvA hardly qualifies as covering that base due to its very, very limited population.
And what does the fact that it is a very, very limited population tell you?
The problem with the people who want "P-51's vs. 109's; Zekes vs. Corsairs, etc.....you know, the whole good vs. evil thing" is that they want to be the good guys shooting at the bad guys, but it isn't any fun if there aren't any bad guys to shoot at because everybody is playing the good guys.
If we broke it into two sides, Axis vs Allies, we see some huge problems. The only one of "the big 4" fighters that is Axis is the #4 fighter, the N1K2-J. But even so, the fighter situation is close to parable compared to the bomber situation.
Allies:
A-20G
B-17G
B-24J
B-25C
B-26B
Boston Mk III
Lancaster Mk III
Il-2
SBD-5
TBM-3
Axis:
Ar234B (perked)
B5N2
D3A1
Ju87D
Ju88A-4
Ki-67
The Axis' hitting power is minisule compared to the Allies. The one Axis bomber that has a decent warload, the Ju88A-4, has poorer defense than the Lancaster and carries less than half the load, slower. The Ki-67 offers good speed and firepower, but is only really useful against towns and factories. On the carrier end of it, due to very light bombloads on the two Axis carrier fighters, the A6M5b and A6M2, the Axis would be forced to use the 1937 D3A1 and 1938 B5N2 as their strike aircraft, aircraft which carry less than the F4U and F6Fs the Allies will be using 98% of the time, ignoring the SBD-5 and TBM-3. For base attack many Allied fighters carry relatively heavy warloads of 2,000lbs of bombs and often some rockets as well. Only two Axis fighters can compete, the Bf110G-2 and Fw190F-8, all others are generally limited to a 250kg bomb or two. Admittedly the Axis will have superior anti-air capabilities for their vehicles comparing the Allies' M-16 to the Axis' Ostwind and Whirbelwind.