It'd be great if lofting and sweeping could smoothly interpolate between paths with different numbers of kinks without weird artifects like introducing folds and edges.
Currently, if you take a kink-free surface (circle) and a kinked surface (U with a bar over the top) and loft between them,
you get something like
which ends up looking like a sharp edge in a product rather than a nice, smooth surface.
Intuitively, this could be better handled by detecting those kinks and having a fan-out from them to the smooth edge instead of adding a single rail from the sharp corner kink to an arbitrary position in the smooth surface.