Looks nice. BUT. Hate the floating menu as it takes up reading space, and miss the names being above avatars on posts. That's immediately where my eyes go to see who posted because the eyes naturally follow the left and top lines of each bounding box around the post, guiding them in to the top left corner. Also, the avatars not sticking to a 1:1 aspect ratio is a bit startling as you scroll because everything is sized differently.
Slight bug: very long names in the "Last Reply" column cause that post's row to be a bit wider.
Just sayin.