Is webassembly the future of web browser scripting?

It translates from C to asm.js

What if our scripts were binary blobs and had buffer overflows and a binary blob array of bytes you have to allocate manually?

Wouldn't that make code fast? The compiler can throw away all of that bloated type and aliasing information to speed up the download. I think each script should bundle its own C and C++ libraries too. You might want to use different kinds of malloc for different scripts. Bundling every script with its own binary version of Boost would also be a great idea.