Feature description:
When settings margins, allow tapping the current number and entering a number with the touch keyboard as an alternative to sliding the bar.
Add a way to adjust all margins in one place (one setting for top, left, right bottom).
Problem solved:
Maybe it’s because I have big fingers but I despise using sliders to set exact numbers as it’s imprecise and infuriating.
Setting the margin for all fields manually is tedious and often for a consistent view, they are set to the same values (for similar fields) anyhow.
Brought benefits:
Easy way to enter exactly the value you want to.
To quickly assess what range of margin works for you, a way to set all values and then only adjusting single values that deviate from that would be way quicker and more efficient.
It could also be a way to reduce the quite lengthy settings page if you implemented global margins and then only display individual margin settings when the user wants them to deviate from the global values.