Changing some parameters like the brush size for the object selection is unprecise. Depending on the screen solution the maximum value can be 4000 and even more - then it get’s really complicate to change the brush size from 50 to 55 or so.
I recommend to think about two options for all sliders (which should be easily toggled on/off):
- logarithmic / decimal scaling
- snap feature which would for instance select preferentially values 5,10,15,20,… between 0 and 100 and 110,120 and so on up to 500 and then 550,600,650, etc.
The size can be changed by clicking on the actual number and entering a new value, but when already using the keyboard for changing a value why no keyboard shortcut is available for doing so.