I don't know if I'm alone in this, but it generally takes me days, if not weeks, to craft a Wiki entry. In my business, it's important to the readers that the information in the wiki entry is correct, and it takes time to check this and get the entry just right.
At the moment, as soon as I put even an outline on the wiki, it is visible to all and sundry. So I end up having to tell everyone that it is actually a work in progress and could they please just hold off until I've finished.
It would be really neat to have a tick-box to indicate that I (the creator of the entry) am the only person who should be able to see it right now. I can then leave that box ticked until I am happy to publish the entry.