Opacity control via incremental change
need the option to be able to bind incremental opacity levels to just 2 buttons(+ &- values)Example: pressing J to increase by a value of 1 or keeping it pressed to increased by a value of 1 every 0.2sec; and vice-versa for another key.
Without needing to be hovering the opacity panel.
There are commands in Keyboard Shortcuts that can be assigned to keys, to set opacity in 20, 40, 60 etc percents. This is not exactly what you need, but still is better than nothing.
Otherwise you can use Autohotkey (Windows only) to automate this.