When using the menu's sliders to change settings, it's quite difficult to get an exact number due to the nature of the mouse-controlled sliders.
What I would propose is a small box next to the slider that you click into, and enter a numerical value. Additionally, when changing the value with the mouse, the number in the box would represent the current value.
I am aware that you can use the arrow keys to change the value, but this is tedious and only works to fine-tine adjustments previously made with the mouse.
If this can be done with all the items in the menu that are controlled by a slider, it would make getting everything set up to your own preference a much quicker thing to do.