When these things are done, I will be almost happy. It will be relatively easy then to emulate most meshes, fields, etc. by overlaying semitransparent elliptic gradients.
How does that follow? Nobody has shown how to transform a gradient mesh into a gradient field (a very good name actually).
I'm not a mathematician; I'm a designer. I think I can approximate well enough (for design purposes) most useful meshes using ellipses, and a still better approximation is possible with blurred strokes of blur filter on shapes. See the current about.svg for a crude example.
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