Fader adjustments

I would like to see adjustable fader increments. For instance, one would go to fader adjustments in preferences and if they set the value to .2db, the fader now moves in .2db steps using the mouse wheel. If you set it to 1db, the fader now moves in 1db steps. It could be at default whatever it is now but the ability to change it would be helpful. Also to be able to adjust the value set when moving fader while holding shift would be a helpful add. I may want the fader adjustment to be .1db while holding shift and .5db when not.