Here is the list of the CKPlugins that sound interesting. Some of them might find their way into default version of Instant Update. Suggest yours!
Auto Save Plugin for the CKEditor which automatically
saves the content (via HTML5 LocalStorage) temporarly (for example when a
login session times out). And after the content is saved it can be
restored when the editor is reloaded.
Media (oEmbed) Plugin
This Plugin allows to insert embedded content (such as
photos, videos, audio, and other rich media) via the OEmbed API. You
only have to provide the url to the site (It works also when the url is
shortened) you want to embed and the plugin does the rest.
Adds a gear menu button to CKEditor to allow authors to easily add and edit templates.
* There is also bootstrap version of this plugin