Yeah, that's one downside of focusing on size alone, you'll have to make many compromises what to include and what to leave out. I'd love if browsers would have font- and text-rendering APIs that are low-level enough to integrate with WebGL/WebGPU.

I have been planning to write one based around 2D canvas that uses pixel scanning and alignment properties to compute the metrics information that has been missing from the native APIs. Would allow a basic glyph atlas and layout, but I do wish had access to a glyph shaper directly....