WebAssembly gives you an entirely new perspective for writing applications. What language do you like to see compiled into WebAssembly and Why? If it is already compiling into WebAssembly what is your favourite feature in it.
Scheme, there chibi-scheme that compiles to wasm. My favorite feature is that it is very easy to express (html (code "in s-expr")). On the bad side, the interaction with JavaScript side is kind of pain. I did not figure out (nor tried whatsoever) to create a (general?) message passing kind of facility, that would allow me to do both DOM manipulation and XHR.