Just some personal opinions:
The Bearcat and Seafury are both VERY late war 1945 planes, we might as well start considering the Vampire or the Shooting Star if we are going to add them. Also, they would add to the top heavy super-perk plane catagory. It does however point up the need for more CV aircraft, but personally I think the SBD, Val, Kate, or the Helldiver are more needed - not more fighters. The fact we have only 1 Torpedo/Bomber on the CVs probably needs to be attended to more than more Perky fighters.
The Komet would be a fun novelty item to fly and might fill a hole in quick base defense against high-alt bombers. Since they actually engaged in combat, they would be historically more viable too. But the fact that more exploded or crashed than inflicted kills would be difficult to model. I think adding the 88 Flak to the field guns would be a better fix.
The P40 should be added, as well as the Catalina and B25. My guess is that we'll see them eventually.
As for the B29 with a Nuke, I wouldn't hold your breath.
Historically, the greater need is for the most produced Bomber of the war to be modelled - the B24 but I fear a B17 with half the bombload would be a much flown item.
The Blackwidow is probably going to have to wait until "nightime" is really integrated. At present, people regard night as a nuisance. Once that changes then Bombers and Nightfighters will really come into their own.
Just some thoughts.
Seagoon