Am a working photographer, using a 13 inch MBP. When editing, I find I have to scroll up and down to see the panels I want to use, because they can't all be seen on the screen at once. The panel headers are taking too much space.
I suggest - totally flexibility in chosing position of the panels on the side, i.e. you can have basic , followed by transform, followed by details - great for architects, or basic, followed by color, followed by details - great for event photographers.
I suggest - the ability to hide those headers you are not using, rather than currently just collapsing the details, but leaving the header in view.
This came around as the latest update has moved profile to the top. I rarely use this , so it means I now have to scroll down more to see the stuff I actually use.
I don't think it is difficult to make the panels completely modular, i.e. switch on what you use and can move the sequence.
Hands up for this!