Are you considering using the Google Drive SDK and/or their real time collab? Or are you going to avoid any kind of RT in the interests of speed.
I only ask because the app alone sounds like a nice idea, but the key thing is what you integrate it with. Having yet another web app provider that is storing data is a no-no for a lot of people.
No, we won't use any of Google Drive but we will have real-time collaboration. Of course, we don't want to lock-in people's data, so we'll have 2-way data flow between Google docs and other formats.
I only ask because the app alone sounds like a nice idea, but the key thing is what you integrate it with. Having yet another web app provider that is storing data is a no-no for a lot of people.