I think you're right but the lack of industry standard for this kind of thing kills it. People want to be able to take the output of whatever tool they use that exports SVG and put it in a browser. Which isn't an unfair request. But you wouldn't have a guarantee it wouldn't filter out the tool using some obscure SVG functionality.

I'd love to see an agreed standard like OpenGL vs OpenGL ES for SVG. SVG-ES. Everyone agrees on the static, non-scripted elements that should work.