[WhoDatNotSayin]

If you can imagine a swashplate with a rotating drum-shaped fairing fixed to the rotor blade shafts outside, you've got a mechanism that will control wing pitch (cyclic as well, if you want it. The mechanism isn't identical to a choppers, but the principal could stand. Using the swashplate for pitch would then seem to rule out throttle control etc, but in principle you can have multiple swashplates on a single shaft. Note that the outer component, with wings and engines, is freely rotating, unlike a helicopter - this simplifies things greatly.

I was assuming the power was from conventional turbojets. Ramjets were beyond contemporary technology, and no use in this context anyway. Did you mean pulsejets, as in a V1?

I think this was dreamed up by someone who needed to appear busy at a time when he otherwise might have been handed a rifle and told to march east to meet the Russians. "Oh look, this will win the war for us"

Absolutely. Plus as long as the Nazi leadership could keep such dreams alive, they could convince themselves they could win. Good for propaganda too - this faith in 'wonder-weapons' seems have found it's way into the general population too, by many accounts.