I agree the forum looks much more professional and neater. Plus (I don't know if others have noticed this) the pages load much faster. This means I'm much happier and spend more time reading than waiting... ;D
First, yes I like the new look, very much. Love the better response time too.
My suggestion for improvement is to make the small "new" blue buttons bigger (thicker, more pixels in height). I keep missing them.
They could be the full height of the line, and that would make them easier targets.
As a once-upon-a-time member of the Society of Newspaper Design and as a former design award-winning newspaper editor, I've got to say this is a tremendous improvement over the old! (Note: That's not to brag on myself - just to establish credentials)