I'm fine with trying new things. In particular, I'm curious as to whether people have tried to build a desktop environment around webkit or similar--basically using the web stack instead of traditional GUI toolkits? Is there some obvious reason this is a bad idea (yeah, I know working in JS is unpleasant, but we have alternatives these days and frankly all of the native GUI toolkits for Linux are pretty unpleasant as well).

EDIT: I know ChromeOS exists, but that's a lot more than a desktop environment (can't even run a compiler natively for all intents and purposes iirc).