Package manager (e.g. NPM) for shared libraries in browser
Make browser user able to install libraries, like on operating system, and reduce the amount of data that we have to download for each app loading.
If the browser would have these libraries shared, then we wouldn't have to use so much traffic to load them from every app every time, that would reduce the traffic footprint for downloading app dependencies.
This is similar to an idea I had for native libraries.
Would be useful for game engines, crypto and anything computationally expensive.