NX has had the capability of pulling on surfaces for years under the Edit Surface toolbar (Edit Surface Poles or even Points), not just when Shape Studio added X-Form to its command list. However, the methods for changing continuity after pulling on the surface were pretty clunky.
NX Freeform is Ruled, Through Curves (skinning and/or lofting), Through Curve Mesh (net of curves), N-Sided Surface (for filling in areas), Section, Swept, Bridge (a type of fill or transition between 2 or more sheets) along with more tools for specific scenarios (flanges, ribbons, transitions, extensions and quilts). This comes with MOST bundles for any type of modeling.
Shape Studio, which is more along the lines of something to compete with Alias and the like, adds Swoop (define and shape a surface in one command), 4 Point Surface, Studio Surface (a type of Sweep that can use 1 guide and 1 section or you can go up to a mesh of curves and assign up to G2 continuity), Styled Sweep, a powerful editing tool called X-Form for shaping a surface, Transform Surface, Deform Sheet (twist, bend and skew with sliders), Match Edge (for matching continuities up to G3), Snip Surface (a permanent Trim that cannot be Untrimmed), Refit Face for editing surface degree and patches, Pole Smoothing for editing a surface, Curve on Surface, Styled Blend (up to G3 continuity), Styled Corner (complex ball-end or set back corners up to G3) and Shape by Template for shaping splines to a template spline. This module is an add-on and wasn't that expensive the last I checked...well under $10,0000 for the above, and I believe included Analyze Shape and Visualize Shape.
Tim Flater
Senior Designer
Enkei America, Inc.
Some people are like slinkies....they don't really have a purpose, but they still bring a smile to your face when you push them down the stairs.