Well, we could certainly inject new stylesheet rules but that's bound to cause problems since we're at the mercy of the browser CSS engines. I suspect that most

Well, we could certainly inject new stylesheet rules but that's bound to cause problems since we're at the mercy of the browser CSS engines. I suspect that most jQuery users enjoy writing selectors like "div:first > span" which will be completely null-and-void once we step out of our protected JavaScript garden. Since we can't get full API compatibility it really makes the prospect not very exciting for us.