I always thought the XP-71 was nifty-looking, if a little ambitious in the armament department. I mean, 2 37mm and a 75mm cannon? For air-to-air combat? If the Axis had ever developed a serious long-range strategic bomber, then it might've worked as a bomber-destroyer type, but I suspect an in-service machine would've sported lighter guns, or else have been turned to something like anti-shipping.
