I guess the main area we differ then is that I do feel like I can say whatever I want on G+. Actually, let me take that back, I feel like I can say whatever I should, and that's a fairly important distinction.

I could easily foresee some kids trampling my lawn and me writing a hasty reaction on G+ of something like "I think all children should be murdered." It would be a joke, and anybody that knows me would know that (though potential employers and the like almost certainly would not) -- but I'm free to make that statement, though I might not post that publicly. Whether or not I should make such a statement on the emotionless internet is up for debate.

While I'm open to agreement that perhaps my views are just that vanilla, I've never had a political statement or personal statement that I believed in that I didn't feel I could express on whatever forum of my choosing, while acknowledging that sure, if I say positive things about political_candidate_x, I might very well inflame my friends and colleagues who adamantly support political_candidate_y.

Not that if you establish a pseudonym another sites first, like Lady Gaga, you can use that psuedonym on G+.

You can also engage in G+ as a Plus Page as though you are a rock band, with just about all the features of a personal user. But you do need have a person account to own the page, but I think you can make the owership a secret that only Google knows.