PTC Creo | Intuitive = Polar Opposites... Infinity! 
Matt, Doug actually helped me uncover the "logic" of the spline's nodes. This is very good to know and quite controllable -before- using the control polygon is activated if you start with a linear spline. That is the awkward part about controlling the node locations.
Splines are a funny this way as they are all about "feel" or "curvature control" More points more control yet less smoothness. A 2-point spline with tangency is the smoothest transition. Just turn on the fish-fin to see the variation.
I really liked working with splines in SolidWorks. It was more like graphic art programs work. Everything you needed to control the spline and nodes was available in the sketch and they didn't get lost because there was only one mode of working with it. Very dynamic as well.
Thanks for voting on my submitted Idea. Hopefully this one can get some tractions. It seems pretty straight forward.