[quote=@BangoSkank]
You could use the Test section.  Not quite the same thing but...

If you don't want folks seeing that you've like posted a new thing there, if you're kind of keeping something under wraps until you're done, you can always Edit a post you've already posted and it won't update the thread as having a New Post.

As a work around until they fix that.
[/quote]

Or if you want to be sneaky, you can type up the draft, replace it with a blank space, and then reference your draft in the secret Revisions page ([code]https://www.roleplayerguild.com/posts//<postID>/revisions[/code]). You can only see your own revisions though ;)