The new "hover to get scroll bar" feature causes more mouse use and pin-point control. It may look cool, but it isn't user friendly. Fast, efficient = a good program, not the graphics. Whenever you have to remove hand from the keyboard, grab the mouse, point it to a very small location on the screen and maneuver the mouse carefully in a straight line to get what you need, you are wasting time and causing hand strain. A very needed improvement is increasing the keyboard and decreasing the mouse use. This feedback was given multiple times in the very beginning of 5.0, but has been ignored to date.
Want to darken the scroll bar arrows and bar.