This looks neat! I think you really need a gallery page that shows all the kinds of things that are possible.
Is there a way to make the background transparent, so you just see the page background behind the plot? I have a project that needs that, and for 2D plots we're doing it with JSXGraph, but for 3D we've been using GeoGebra so far, and the figures look like something else embedded rather than an intrinsic part of the page.