I think true innovation here would be forgoing a centralised package registry and just using good old file systems. Go modules have the the right idea, pull a package from a server which responds to basic HTTP requests or even a file system. If you want some smart searching capability, or generated docs then create a proxy which packages are downloaded through which allows you to index them.
Just take things back to basics. You shouldn't have to publish a package on some centralised registry, you should just be able to import a package from anywhere.
Just take things back to basics. You shouldn't have to publish a package on some centralised registry, you should just be able to import a package from anywhere.