Hello, first of all thanks for this great program.

I think that main problem, when you have multiple monitors, is DPIs.

This could be accomplish easily taking into account bigger screen as reference and getting its size from xrandr. After that configure the rest of the displays using that size as reference and calculating its scale size to nearest similar DPI or proportions accomplish that with xrand --scale or xrand --scale-from.

This could be an enact --scale or by default an add --no-scale option.

What do you think?

I still using raw xrand because the lack of this feature.