Possible killer feature for Chromecast

I've been playing with my Chromecast since Thursday and really like it.

I'm thinking this idea is a no brainer and will probably happen: Streaming from Google Drive.

Imagine this. Storing content on Google's cloud in a variety of formats and Google handles transcoding if needed to a format the Chromecast can play.

I have enough space on Google Drive to store 4-5 1080p movies and think this wouldn't be that difficult to implement.

I also use G+ to store photos and Video and imagine playback of those is coming to Chromecast in the near future.

Dropbox support would be NICE too and to compete I think Dropbox would have to add the Chromecast feature to their service.

What do you guys think. What else might be coming for Chromecast?