Make Lasso Tool Line Adjustable

When using the lasoo tool (any of them) it would be very helpful to be able to adjust the lines created by that tool. 

When I select this tool to perform a fill in a lasooed area and, after completing the lasoo, notice an area that should have been included but was missed, there's no way to make a small adjustment. The entire lasoo needs to be redone. The ability to fine tune lasoos by making adjustments to the existing lasoo lines would solve this issue.

A feature might be something like touching the mouse pointer on the lasoo line, holding the button down and reshaping the line to the desired position.