I agree but then I think it makes it more obvious who is logged in, for example I am currently using the shared machine in my house and not one of my laptop's/private machines... So if I walk away and my other half comes on here she will know I am logged in instead of here... it is a lot more obvious at least.
Lol I liked it where it was personally, and would not have moved / removed it... However again everything will be customizable when we get out hands on this so I can wait until then and then make it look as I want
I think just having your name displayed at the top will be easily missed by most (as it is just a string of text), and people will think they have been logged out. An avatar is a picture and that catches the eye a lot easier.