Google brainstorms: how to integrate Google+ and Gmail?

The bad news for those who use Gmail, but do not like social networks. In the near future, Google is going to integrate its email service with Google+. True, the developers still do not know exactly how to do it. Gmail frontend development manager Mark Striebeck asks users to help with advice .

Interested in three questions:

• Which email client features are easier to integrate with Google+?
• How can I integrate Google+ functionality into an email client?
• What social networking concepts can I integrate into Gmail to make email work better?

The brainstorming will take place on the Hangout channel of Mark Shtriebek on Wednesday, July 13, at 02:00 MSK (however, judging by the number of comments to the Stribek post, the brainstorming has already begun, and getting to Hangout will be problematic). You can pre-publish your ideas in Google Docs (Mark needs to ask permission to edit the document).

Sending emails to addresses from Circles, automatically adding the addresses of your friends to your email client on Google+ - what other features would you like to see in Gmail?