I would note that as the Axis rely entirely upon the Japanese for their carrier aircraft it is kinda important that the Japanese carrier aircraft be well represented.
As to the B7A, well, it never operated off of a carrier, but I would like it to be added. Even if it can't operate from carriers in the MA it would still have a hook and could be allowed on carriers if somebody wanted it to be or a "what if" event was being run. While not many were built, 114, that is still more than some other units in the game and it would be one of the more potent attack aircraft.