When manually adjusting the tonal values of some thousand pictures I am grateful for every single mouseclick I can avoid.
In the levels adjustment dialog I frequently switch between the red, green und blue channel. To do so, I need to open the drop-down-menu, move to the correct entry and click again. This works in about 90% of my attempts.
If the dialog would use horizontal radio buttons, a single click would suffice:
( ) Master ( ) Red ( ) Green ( ) Blue ( ) Alpha
or, if there is not enough space:
( ) Master ( ) R ( ) G ( ) B ( ) ⍺
I would very much appreciate that!