In Page Layout Edit mode, currently the legend on the right side of the screen takes up so much space that part of the list of Object Fields to drag and drop to and from below it is only partially visible.

The down side is that I have to scroll all the way to the bottom of the page to access certain fields = more scrolling, carpal tunnel issues, annoying feelings, etc...

Once suggestion to make better use of the screen real-estate is to shrink the Field Legend at the top right of the screen.