We haven't hit the insanity limit quite yet.

It looks like Alon Zakai is working on something the "Emterpreter," which is a bytecode format that Emscripten could compile to to sacrifice some runtime performance for startup time. (JS parse time is quite a big deal for Emscripten applications)

I am hoping that this effort goes really really well. So well that browser engines start natively supporting this bytecode.

Then JS can actually die.