In the example below, the resulting surface has an inconsitent curvature distribution along the curved side. Sometimes the inconsitency is small enough and not a big issue. But when the guiding curve has a relative high curature, the inconsistency often turns out to be unacceptable.
I wonder whether it's possible to build the surface with a straight line as the section first, and then use a blending command to create the curved area on the surface. Thanks for your comments!