I'm referring mainly to the page load time increase, which is important, especially on mobile. (Given what I've seen of the generated code, I suspect runtime pe

I'm referring mainly to the page load time increase, which is important, especially on mobile. (Given what I've seen of the generated code, I suspect runtime performance will be affected too, but I haven't tested, so I can't say for sure.) This is why people create microframeworks—the page load time improvement with e.g. zepto over jQuery is not insignificant.