Why is the WYSIWYG editor planned only for the paid version? I would say making it available in the free version is much better, as it will attract a lot more users ... who then possibly buy pro stuff.
Markdown is nice, but only so limited. The WYSIWYG editor is a huge selling point in Wordpress, as people can easily install WP for free and comfortably publish their content.
If the WYSIWYG editor was paid only in WP, a lot less people would use it.