Support for sections (wider/width)

[Kalfany]

I rebuilt my old dashboard (masonry layout) with the new sections.
The only thing I’m currently missing is the ability to adjust the (overall) column width of the sections.
In the old dashboard I did this to make the columns wider and cards a bit bigger.

Would something like that also be possible for the sections?
I have 3 columns, but there’s quite a bit of empty space on the left and right sides.