The Lancaster was primarily used at night....just sayin. IMO there are more important additions that need to be addressed first (Ki-43, He-111, more russian and italian aircraft to name a few), but eventually I'd like to see the P-61 in the game.
+1
Eventually, I would like to see the P-61A or P-61B. The P-61B would get more use due to its 6400lb bomb load. In either case I'd like to see it modeled with the quad .50 turret.
Before that happens I would like to see core and more significant aircraft added, B6N2, Beaufighter, C.200, CR.42, D4Y1, Do217, G.50, He111, I-153, Ju188, J2M3/J2M5, Ki-43, Ki-44, Ki-45, LaGG-3, MiG-3, Pe-2, SB2C, SM.79-II, TBD, Tu-2, Wellington, Yak-1, Yak-3 and Yak-7.
TO my mind the P-61 falls into the same category as the G.55, He162, Ki-102, Ta152 and such. Valid additions, but low priority.