I have a free account. I'm not yet ready to pay.
I have a repository, that I want to hide. Repository contains code, that is outdated, and useless, and not interested to anybody, but I don't want yet to delete it just in case.
So I propose one more repository access level: archive. Nobody except me can see archived repository, nobody, even me, cannot push into it.
Such feature could be useful to hide incomplete frozen project from my page.