Does Google+ have things it needs to add to become more useful? Absolutely, but I have found more engagement and user interaction on Google+ than on Facebook, mostly because I can curate the content to a specific subset of my circles thus making the content more relevant to those people, thus getting higher quality feedback from many different people.
I get higher click throughs to links on Google+ than I do on Facebook or Twitter, and I get more insightful and interesting debate on Google+ than those other two. That in my book is a win.