Concave fuselage / Corner radius
A feature that would allow us to chang corners of fuselage blocks to concave curved and concave circular, and to edit radius of round and circular corners. Radius editing would be such that the curve takes a certain percentage of the side of the fuselage block (default 50%) for circular corners, and exact radius of the corner curvature for round corners.
Burke Enterprise commented
This idea would allow people to make flying boats properly