The RAF had one of these after the war with the Enemy Aircraft Flight at Boscombe Down. They sent it to RAF St Athan for storage in the late 1940's, they decided to hand it over to a Museum in the mid-50's but couldn't find it! It seems someone decided to steal it and turn it into scrap, they never found out who did it.Agree... the push-pull arrangement could've been made to work; alternately, just design it as a conventional four right from the beginning. It wasn't a bad airframe design.
Oh, and drop the loony dive-bombing requirement and stick a tailgunner position where the stupid dive brake was...
Problem was that most strategic-bombing thinking died with Wever, and no one stepped up to take his place. For all of Goering's pretensions, the Luftwaffe continued to be viewed as basically an adjunct to the Heer....
The French operated some of these after the war.