Script sharing part support three scopes:
Public - GitHub (only!) public repositories. Everyone see your code.
Personal - your private repositories in Gitlab/ Bitbucket/GitHub.
Organizational - organization repositories. Available for all team members.
You could share load script and sheets with the community or just in your team in the first and the third scope.
I think, in the future, we need to help our users to create "local" copies of the most popular libraries in their enterprise environment.
Gitoqlik scans GitHub and retrieve repositories with "gitoqlik-lib" labels. That kind of repositories will be accessible for importing in Qlik Sense applications.