Yes, yes, I know, I know...... The F7F never saw combat in the war..... Even though it was delivered to USMC units prior to the end of the war. But aside from such a change being made (Then also add the F8F), there are few American craft that would make for a valid perk cost...........
Maybe the Black Widow is worth a small perk. If the 51H were added it should get perked. But other then that..........
Don't think the A26 should be.
Did the 2x 20mm 4x .50 version of the F6F see enough usage?
AFAIK the only F6Fs that fielded cannon were a VERY small number of F6F-5Ns. Most of them were armed with the 6x.50cal for logistics purposes.
I don't see the P-61 being perked. AWESOME firepower, but would the performance justify it? She'd basically be a lot like the Bf-110.
Also, the P-51H never saw combat, even if it was deployed in small numbers to front-line units, and none of those were being flown operationally so I don't think it should be added. Otherwise we WOULD need to include the F7F and F8F, which were loaded up with carriers en route to the Pacific when the war ended.
I do think the A26 would merit a small bomber perk, maybe not a significant one, but it should be there.
The truth is, the only REAL options for a perked USAAF ride are the A-26, and the hated B-29.