Yes, we should have open standards for content-types and dynamic fetching and updating of code from trusted locations on the network. Then the browser itself

Yes, we should have open standards for content-types and dynamic fetching and updating of code from trusted locations on the network. Then the browser itself becomes little more than a container for executing rendering code, with plugins for every content-type under the sun. But we are on a different timeline. With WASM, this may yet still happen.