As simple as you like
Using either WYSIWYG or markdown, you can just get on with writing in freeform as you're probably used to.
It is likely that more 'simple' editors will be added in the future. Posts was designed with flexibility in mind so expect to find more writing tools in the near future.
Posted in Simple Posts
The Richeditor WYSIWYG Body
This is just a simple post with a richeditor WYSIWYG body