I suspect this is somehting could be done with SubD? (where input surfaces can be any type). Like the tool would exract surface edges make them Subd friendly(without shape changing) and create blending surface as SubD (as technically separate geometry but visually as blend)
Thanks for the request, I agree that would be powerful. We’ve got an open internal feature request for more ability to create SubD from and matching continuity to existing NURBS edges. It’s RH-49943 for future reference and I’ve linked your post for the devs as well.
