Under the old system, it was quite straightforward to see what you were doing. There was a preview of the page at the top and a code editor beneath, so you could see both at the same time. This made it easy to understand the wikitext at a glance. With the 2017 editor, you can only look at one at a time, and the preview button is rather unintuitively hidden under the publish button. Could I suggest that you revert in some way back to the old approach? The article preview could perhaps be put in a scrollable box above the editable region.