Not as bad as some people are implying, but still inferior to the old design. Needs work. Honestly if you could just update the visuals of the original design to keep it "Fresh" that would be fine. Maybe a few nice tweaks that aren't disastrous.
One thing that's slightly annoying is my avatar at the top of my screen. I don't mind it in the "My channels" page, but if it's going to follow me everywhere I go on Youtube, it's going to be kind of annoying.
But yeah, I'd prefer to keep the original design (Including the no avatar following you everywhere, Lulz)