Would this/could this replace Hangouts? Or maybe WebRTC is a good complement for Project Fi?
This would be nice, but Google has a habit of buying companies for certain people or certain technologies and just ditches the actual projects the companies are doing.
Sometimes said people or technology are integrated well, sometimes they aren't and we never see those features ever again.
Meanwhile Google badly needs to go on a mobile spending spree. Companies I would buy in their position include Localytics, AppsFlyer, Contentful and mParticle. Buying those would significantly increase trust and buy-in from mobile app developers, who today probably have more interest in Facebook and Parse.com than anything else
Doesn't hurt that Jibe's office is a few blocks from the GPlex I bet.
Hopefully this betters the Hangouts app, on Android at least.