I think the power loss associated with a tandem rotor gets you into a diminishing returns scenario when you drive the weight up that high (but im no aerospace engineer) . I think the new tech and sizing of the CH-53K will far outpace anything a 47F could do. This is the right move rather than updating severely worn airframes. You can drive a humvee up the ramp and load full sized air force pallets into the K (straight from the C-5/C-17) and the avionics/electrical equipment have been completely redesigned based off of 50+ years of lessons learned from the maintenance and operational side. I'm excited to see the full potential this heavy lift assault support/transport helo has to offer. I just hope the good idea fairy doesn't appear and try to weaponize this thing, the true weapons are the dudes in the back and their gear being transported. I've also heard that the swashplate is milled from a single crystalline titanium block, that's just cool.