So, what POD's are needed to get the flying wings of Jack Northrop and the Horten Brothers into active service on one or both sides during WWII?
The fact that it is, for tactical purposes, invisible, mitigates this. None of the WW II designs had this advantage, or any other advantage that would make them a compelling choice.
Well actually, the DeHavilland Mosquito was considered to have minor stealth capabilities due to the wing design and the radar-absorbing balsa/basswood it was constructed from.