For NURBS - I would like commands like the Loft Surface Tool (Revolve with Rail, Surface from Curves, Fillet Surface, Extrude Along Path etc.) to create dynamic objects, where you can interactively move and edit the contour and rail curves to change the resulting shape at any point after its creation. (ie. Cinema 4D Loft NURBS, Lathe NURBS, Sweep NURBS) These creation tools should also never fail but instead propose a solution that works. For 3D Fillet - I would like this to create a dynamic o