That doesn't really answer the question - no static site generator {that I know of} is WYSIWYG in the same way as Wordpress. Yes, you can train people how to use a generator, but compared to a dynamic CMS they have a _much_ steeper learning curve {based on my experience training people about web publishing}.

The closest I've seen is using Sandstorm with their static Wordpress site publishing but it's still nowhere near as smooth as plain Wordpress.

(Edit: let's add some qualification because downvoting)