Let users opt in as anonymous or public-profile.
This will help Google+ stay alive forever and actually overtake Facebook, who is already data-mining. We need Google+ to democratize information and allow participants to make live decisions based on dynamic (live) data.
For example, let's say I'm promoting a stereo exhibition at Moscone Center in San Francisco. I create an event. Those who are interested can associate their Google profile to my event anonymously or as their public profile. From here, Google can find ways to let the sponsor determine how many people intend to come, how many people are actually on the way... is there enough parking. Users can participate by commenting on live traffic, etc and provide live feedback all around the event which the sponsor can later use to improve the quality and performance, and users can share with each other to 'democratically' improve the event.
Trends: Add a Trends feature to Google+. People can associate to trends as well, so that trends develop democratically instead of being foisted out there as robotically-gathered indications.
The concept of democratizing information should appeal especially to Google, who has shown a real knack for providing users with what we want to do what we want to do. The use of bots and algorithms for gathering info from users precludes user choice and conscious participation.
It doesn't take but a little imagination to envision how businesses, communities, groups and people would unfold provided we have the actual live information we need to make sound decisions, as opposed to hyper-competitively driven push technology constantly flooding our brains with more options than we really want or need.
Facebook is a social networking site with some mini-aps integrated into it. Google has a strong suite of apps all of which are more robust. Google is so close to the ideal marriage between data-mining and trend-surfing that it hurts to think Google+ might disappear before it really matures into its full potential. This would be tantamount to eating a Snickers candy bar before dinner and loosing one's appetite.
Go, Google ! It's not necessary to walk completely away from algorithms and bots to anticipate what people want. What's more necessary though is to provide real live people, individually and in Circles, to determine for ourselves what's best for us.