Keystone Tool Improvement

When using the keystone tool and aligning each keystone point, every time I click on a point, it moves out of position. I then need to realign that point, wasting valuable editing time.

What if, when selecting (highlighting orange) and aligning a point, you could use a simple Tab button function that, once pressed, the selected point would move to the next point, in a clockwise motion. That way, the point would not need to be hovered over and clicked on, avoiding misalignment. This is a small request, but it would make a big difference to a guy like me.