should improve youtube
For a start, Google + is a silly name. Google is a search engine, Google Mail isn't a great name, but the mail part at least tells you what it is. Whoever came up with 'Google +' and thought this was a good name for a social network is an idiot. It's line extension of the worst kind.
What Google should have done is improved the closest thing it had to a high volume social space where people hang out - YouTube - and just made the channel system work much better. They already have a market leader there, why not add in the Google plus features there to improve the user account experience?
I live overseas and set up a channel on YouTube to put up vids of my daughter growing up for the folks back home. The video upload is great, but there are things that suck really badly. I either have to make each vid public, or if private, I have to individually specify each time I upload a video who can view it. And YouTube doesn't even have anyway for me to set default preferences for things like 'no comments allowed' and so on, so I have to set it each time I upload a video. If you have a channel, surely these kind of account preferences should be available?
If Google simply improved YouTube channels, added in the kind of social networking things they're doing in Google+, they'd have the millions of users already there wasting time using them instead of wasting time at FB. Far easier than trying to pull people away from those to get them into some brand new product with a bland name and image that nobody really wants.