CTR- I agree that Bell was smart to place a big emphasis on cost reduction with their V-280 design. Things like a non-tilting engine and a straight, single piece wing structure reduce both manufacturing and maintenance costs. I also think tiltrotors are likely the best approach for most of the FVL requirements.
However, there are still a couple other potential contenders for FVL besides Bell and Sikorsky. Airbus Helicopter with their compound concept is one example.