I think the adoption issue could be managed by the fact that Current browsers are sufficiently monolithic that you could implement a version of the simple stand

I think the adoption issue could be managed by the fact that Current browsers are sufficiently monolithic that you could implement a version of the simple standard as a WASM host module. It makes the huge things a little more huge but the light weight things more light weight. I don't think it would ever replace the browser but I can certainly see it finding a niche for things like small communities like single board computer enthusiasts where resources are at a premium. I have plenty of ideas that I have doodled over the years of how things could be done in the browser space, and I'm fairly sure I'm not unique in that respect. There must be some pretty good ideas out there.