The easiest thing i can say is, take the best of all the different types put them all together with some very fancy aerodynamics and latest technology whether that be materials, blades or engines
Because that has never been tried before.....
I don't mean to sound too cynical Hughes, but it sounds like the Labour manifesto - too good to be true.
The only thing I can think of is that they are building a next generation autogyro rather than an actual helicopter.
Is that lurking owner you by any chance??