The command I miss the most is the ability to “project” a surface down to a curve, while smoothing the Srf but keeping the edges.
But perhaps there is something like that already?
USEFUL WHEN CP-EDITING
In many cases I start forming complex surfaces (for example “hopeless fillets in corners” with a plane surface attached to corners. Then I gradually increase the complexity of the Srf’s structure, Match the edges, decrease the Control Points back again to smooth out the overly complex Srf (resulting of the Match) and then CP edit the Srf again, and repeating this pattern until it’s close to perfect shape.
But if the surface needs to follow a defining curve somewhere (which I initially use only for eyeballing the Srf), then as a last step (apart from doing Match with the edges of course) I would like to “project” the surface down to any such constraining curve (one curve at the time would be good enough for a start).
And yes, I know of course that there are many (other) ways to produce complex surfaces, but I have found that when the surface lacks obvious symmetry in the edges, CP editing can be a short cut (except for when some part of the surface must also follow a constrained curvature somewhere, and that’s where the “Project Srf to Curve” would come so handy in).
Or, is it only me day-dreaming…