It's all too big.
I don't need half-inch thick lines defining where one post ends and another begins (and in another colour? Come on), I don't need the avatars to be any bigger and I certainly don't need to know any more about you people.
I know I'm probably in a minority but I don't care what badges people have earned, I never read their 'witty' forum tags and I barely even glance at the avatars anymore. Anyone with a small sized avatar now just looks silly with all the blank space surrounding them, and without an increase in text size the bigger avatars look weird sitting in between tiny little text more suited to the smaller box sizes.
My overall impression is of too much blank space doing nothing but distracting me, and of the posts now being pushed a little further over. This is in no way an indication that I want those things to be bigger though. If I cared enough about people to check their badges or their description bits or their names and avatars I'd go to their profile.
My secondary impression is of 'unnecessary.' The old layout worked perfectly fine, was pleasing to the eye, uncluttered but equally not rolling in emptiness and most importantly the focus was on the posts. It feels more and more like I'm supposed to be looking at the people making these posts, or completely irrelevant information like when the post was made. None of this is necessary or even wanted for me to engage in a debate with someone. I don't need to know who they are, I need to be able to read their argument without their 'funny' little gif getting in the way.
Make the lines dividing posts smaller and less obtrusive (change the colour to be lighter.) Put all the useless information like date and time posted to the very far left and in tiny font, make the boxes containing information thinner so they don't intrude onto my reading of people's posts and for god's sake stop trying to push that whole badges thing? Anyone who genuinely cares about their badges is the sort of person who tries to get them, and that makes them annoying (posting in dozens of different forums just to get the 'I've been in lots of forums' badge, making irrelevant topics so they can eventually one day get the 'I made a thread people actually looked at' badge) I won't say the badges system is entirely useless, I'll just say that it doesn't and has never added anything to my enjoyment of this site, and in fact on many occasions has annoyed and distracted me from enjoying this site.
On a related note, why is it that now whenever I see the 'site changes' news topic I get ready to make my case, be ignored (because we all saw how many real changes were made the last time they did this), and spend another two to three months avoiding the Escapist until they make drastic changes to pull it halfway back to being decent? I liked the old layout before all that drop down menu nonsense, why can't we go back to that? Yeah, I'm still sore over that.