Agreed that a richer component library is badly needed. However, native apps can and do frequently invent new UI paradigms outside native (games in particular l

Agreed that a richer component library is badly needed. However, native apps can and do frequently invent new UI paradigms outside native (games in particular like to invent their own UIs, to varying degrees of success). Rather than poor imitations of native, I think web apps UIs would do well to draw their own cross-platform custom UI elements. I don't believe that interoperable and usable web apps are a mere pipe dream, on desktop or mobile; can you imagine a world in which the open web never took root, and we were all stuck on AOL, Compuserve, and Prodigy? That's the current app ecosystem in a nutshell, and it's deeply suboptimal for both users and developers.