I am... not a fan of the new UI.
It's just..... too industrial for me.
If that makes any sense.
Though many of the changes I like a lot. (namely the macro coloring, icon tagging, and the "cool down light".)
But the overall appearance of it......... just feels wrong.

It's too.... technical. I'm not quite sure what the perfect word for it that I'm looking for is... But it's very... sterile.
There's no FF charm to it.
At least not to me.