The new graphics like icons and aura etc are very nice. The thing loads faster for me than ever (when the bugs don't get me) and the layout, although familiar, is new, refreshing and clean. My user experience on Newgrounds has never been nicer.
The only reason I prefer the old way is that it was a little rough around the edges, and I liked the symbolism of that. I always thought of Newgrounds as the best flash site online. I remember my first visit here, with all the violent, dirty, and bizarre flash here I was a bit overwhelmed. I don't recall when I signed up for an account, but it wasn't long after. I looked at Newgrounds as an online paradise for a Metalhead such as I. I mean come on, 98% of the other flash sites out there have really fruity games in comparison.
Sorry this was long...btw.
So yeah I'm a little bummed about the roughness being gone, but I can understand the need to move forward and make everything run smoother with more fluid layouts and a more user-friendly/user-involved system. So A++ on the new design. Can't wait to see it in action when the kinks are worked out.