Imagination coming to life - making us think about different concepts - BRING IT ON!!!!
The ducted fans would work if the speed was there, and no vorticy loss. I've worked with Ducted Fan aircraft before - they work well. The British used them for Police Patrol Survelance Aircraft.
V-Tail has worked well too with the Beechcraft Bonanza Aircraft, and starting to come back in on new design aircraft. I think the new Cirrus fixed wing Jet, or the new Eclipse Jet now has V-Tail as concept.
My view - choppers were really cool in Avatar!