Hello!
I've been doing a project where I found that doing the double line tool instead of a "3 point rotated mode" rectangle is way faster.
However, I find myself missing the rectangles handles over the double line polygon handles.
With the rectangle, you can select and move edges of the rectangle, but with the double line polygon, the handles only let you distort ans scale the shape, something I never really find any use for.
Having the double line handles be the same as the rectangle handles would give them a lot more utility.