Based on the fabulous class by entagma I decided to quickly put together a splineWrap deformer expanding on the concept they presented. Basically I added Control on Spline begin, Spline End, Offset, and a ramp control to scale along the geometry. I also made it so you can build your geometry anywhere (not the center) and in any orthogonal axis. You can find it here if you want:
http://www.orbolt.com/asset/Butachan::splineWrapNH::1.0 [orbolt.com]
if you are interested in the Entagma video, I really recommend it:
https://vimeo.com/181458408 [vimeo.com]