I can't think of anything worse than sharing skills via Dropbox. The version management and AIBoM problems that generates is extremely painful. There's no way to track which version LLM is being used or match it against the skill, and people will likely load up too many skills.
You don't have to expose git repos to end users to use git, or some other database, to provision skills.
You don't have to expose git repos to end users to use git, or some other database, to provision skills.