Like 190a8, P47-25, P38L, F4u-1d, B24.
I'm sure you guys can think of a few more that would not be totally unbalancing.
Give people moving from the late war arena a few more choices, with reasonable price tags. No jets, rockets or very fast planes are needed. But if your willing to spend between 5 - 10 perks to fly a slightly better version, why not?
Plus the B24 would be a good place to spend some bomber perks in the MWA.
Just like the Lancs are for the EWA.