I would like to see a keystroke that toggles the adjustment brushes/radial/gradient/etc. on and off. Yes, there is a button on the screen, but on my laptop many times I have to scroll to find it. A keystroke would be so much faster.
I agree wholeheartedly. The slowest part of my Lightroom workflow is brushing in subtle details in a portrait and toggling those changes on/off via the tiny button in the brushes panel. This is PAINFUL when I am using a stylus and Wacom tablet.