I am somewhat css challenged; I can do some things, but for others I need to find help. So I don't know if this would work for you. I used a mixit style made for LJ, so I used Core1, and followed the instructions here to make the names show. (If, however, what you're trying to solve is the fact that in Core2, usernames show up far away from the userpic, then I'm pretty sure I was no help at all, sorry.)