Bear,
I think I know exactly what you mean - I always want to know who I am talking to. If I don't know who the person is, I routinely click into their avatar to see whatever profile information is there, so I feel better introduced to the person I am talking to.
Works quite well actually and .... once I know who you are, I wouldn't want everyone of your posts cluttered with your info - and if my over 40 brain forgets, I can always click on the Avatar again!
Sorry for not being clear. What I mean is having some user info under the avatar in posts. It means you don't have to go searching in a profile to find out basic info. See the pic attached from a web site I run.