A minor suggestion, but I actually loved having my username there. This would make icon size issues I've seen others complain about simply... go away.
I stole this idea from this locked post.
Meta Stack Exchange is a question and answer site for meta-discussion of the Stack Exchange family of Q&A websites. It only takes a minute to sign up.Sign up to join this community
I liked having my name in the top bar. It was a nice visual indication that I was logged into the site.
I also liked having a ♦ as a visual indication that I was a moderator on a site.
Now my name is gone, there is only my avatar, which at this size is just some random unrecognizable picture. (Ok, more recognizable than the square bra.)
Please bring back the user name.
To make room, you can take out the list of badges. I never saw the point of these. Reputation, yes, I guess many people like to see it, and for people like me who participate on multiple sites it indirectly tells me which privileges I have on the site. But the badges? They don't change often, they have zero impact, they can stay in the profile page.