1) More Presentation Templates
2) More HTML 5 clipart
3) Online Latex (lyx) GUI (or a Chrome Extension)
4) Online Speech to Text dictation (or a Chrome Extension)
5) Online Screen Capture software for audio and video editing (or a Chrome Extension)
6) Some sharing of usage and statistics with world tech community
7) An on -site in house version for enterprise software customers (|?)
8) An easy to make HTML5 editor using just the browser
Seriously http://googledocs.blogspot.com/ needs to be challenged more.