When you have limited industrial capacity, you are looking out of the ultimate superior weapons that would not need to be built in numbers the opponents can do. And the Blitz-Bomber thing of Adolf is also consequent. Such a bomber would allow for raids when the opponents own the skies.Well it's primary function was to be a Pulk-Destroyer (aside from Adolf's usual "Blitz-Bomber" request).
It's Pulk-Destroyer armament layout was one 30mm central nose cannon, 2x20mm nose mounted and 2x30mm gondola mounted
Leaving aside the issue of non seasoned Luftwaffe pilots from end of 1943 onward - firing off their weapons at ranges beyond 200m at Bombers - the intended and practiced range by seasoned pilots was 30-80m
According to "kill&destruction" surveys - the German 30mm cannons did a hell of a wrecking job onto Allied Bombers.
A very potential aircraft - in regards to speed, technology and armament would have been the H219B fitted with two JJ 222 engines or the envisaged DB614 engines. There was simply far too much experimental going on in view of an insufficient industrial capacity.