48 votesCristian Moisei commented
Sketch does this pretty well actually, they make the tool selector available, then change the UI based on the tool you have selected so you have access to the most popular controls. It also gives you quick access to the appropriate styles when you select an object.
It's not a priority, since it will be a while before a considerable number of people have the touchbar, but it is still something to consider.
65 votesCristian Moisei commented
This is not the simplest thing, and it would be hard to get right, but I still think it's something to consider for the future:
Let users move panels around, like other Adobe apps allow.
Personally I prefer to have all my panels on the right side so that I can access my tools on the right and my artboard on the left. Every user has different needs and preferences and giving us the control to move things around and be our most efficient would be appreciated.
Not to mention, since you are in control of the design now, you cannot take into account every screen size. A lot of space is wasted on larger screens.