Since nothing much is happening to the editor part of Codio I think it would be great if we could make use of the awesome free editor Atom from GitHub.
If you could write a plugin that reliably synched files between Atom and Codio we would be on to a winner. This would be very similar to the Nitrous sync tool you can find at the bottom of this page. It could of course be a standalone app like on Nitrous but why not make it a plugin for Atom.
To make it even better you should support the Atom plugins if that even is possible and there would be no need for another editor.