What I’m doing is technically a force push as I am adding incomplete features to WebVG without extensive tests, that’s what they mean by “Move fast and break things.” Grouping is a whole new level but it really needs it.
If I can do this I have some ideas on animation to showcase it: º https://www.youtube.com/watch?v=8yJYGObFYjM
The whole animation of an animation is going to depend on groups.