Yeah, the web API layer stack is essentially inverted, and important parts are missing entirely. Ideally there would be a 3D API at the bottom, on top of that a text-and-font API (e.g. allow to render high quality text into a 3D-API surface without bringing your own text renderer), to the side a vector/shape rendering API as the base for SVG, and a layouting/compositing API, the DOM should only be implemented on top that.

The chance for that ever materializing is most like zero though.