Seriously, if the A26 with 6k payload was in the game, with its 10 forward firing MGs. Who would fly the B17?
The A20 on the other hand is a fun bird in its own right.
4 500's in bomb bay, 4 500's on wings for 4000 lb total. Thats pretty respectable for a "light" bomber. 6 .50's pack a punch once the bombs are gone. Again, more than plenty.
Do we want the A26 someday, sure, love to see it.
But it better carry a hefty perk price or you'd see no other bombers in the sky.