Because of this very reason, I usually write all my posts in a text editor locally before copy and pasting them into Steemit. It works out pretty well, and then I can do version control on some of my work. Inserting images afterwards is a huge pain though. I'd love to see the Steemit editor get more features and allow for writers to customize their posts more.
This is exactly why we need to have an ability to hold drafts on Steemit. Additionally, I think we would all benefit from this capacity as well as the ability to time when to publish posts. I appreciate your point about images. It definitely is time consuming to post pictures within the posts. On to the next idea! @maxg