Easy tools for story/article rearranging
Easy way to move paragraphs around and insert new paragraphs between them. Like an outliner except for writing, not for note taking! (although it could be used for to-do lists and outlining) A good example of this is Checkvist and UV Outliner. Using just keyboard you can add, shuffle, remove, and rearrange whatever you are writing (and since everything is a tree hierarchy moving a whole chapter around would be easy).
This is an amazing feature I wish Write would have, otherwise it is pretty perfect.
Marcel Klewes commented
WorkFlowy (https://workflowy.com/demo/embed/) has a pretty cool implementation and it could work with Write! also, since we already can collapse headers.
That would be awesome.
WriteMonkey has a feature like this. Their editor is pretty primitive otherwise but that's one of its nice features.