Wow, lux!  That's an impressive illustrated tutorial you posted there.  That is exactly what my workflow for creating the teapot spout in my scene file.  I think I even left the guide spline in my scene by mistake.  I always forget about Geopoly though, and just create the circle using the circle tool after deleting the polys.  I skip the geopoly step though, and just scale my shape with non-uniform scaling, then use the Circle tool.

I had regularize in my toolbox in the previous version of Max, and forgot to add it again when I upgraded.  Thanks for reminding me!  That is definitely a great tool, and using it you could skip another two steps from this tutorial actually.  Just select the 4 polys with 8 edges, and click regularize.  Boom.  Done.  No need to even delete faces to get a circle.

---

Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.