I run a mobile demo studio service and must use the smallest laptops possible, even netbooks. The new interface has been bad for me.
X1 lost me 15% of screen space because the new tracks need more room for the same displayed information. That's not better.
The bottom scroll bar is now ABOVE the tabs, wasting more vertical space (in 8.5 they are next to each other, the scroll bar occupying only half the width - much better).
The new PC and track inspector introduces huge colored knobs which waste yet more space. 8.5 had just numbers or sliders with numbers integrated. - much better.
And most PC modules are sinfully wasteful with space, with analog-looking meters and colossal Saturation knob. Why why why?
At the bottom of the track inspector/PC is one single button labeled "Display", losing another 5% of precious vertical space. It is the only button on the bottom. The rest of the space is empty, wasted. Why? It is for settings, it is not used often. Put the button on the top, or as a right-click menu. This is not better.
Introducing TOUCH is good and future-thinking. But if I think touch, I think horizontally held screens. -- which means SMALL screens. THAT is also part of the future, for tracking work especially.
I appeal to the bakers to review the X interface and see how 8.5 offered more overview on less screen real-estate. From X2a on only Win7 is supported, so I must soon get new Win8 touch notebooks, I feel like I am condemned to paint the entrance hall of my house through the letterbox.