Hello! Super Sword is my first boolean addon. The concept is that you drag and draw a rectangle, and then drag again to set the depth, this two steps procedure create a cutter mesh (or other boolean operation). When I develop this, I don’t have the concept of precise placement yet. So Super Sword let you draw and cut freely and fast, but it assume that you do not need to measure anything. For example, you use mirror modifier, then use Super Sword to randomly cut on it, to create some cool shape, it mirror both sides, so it looks good. But the cut itself does not need any alignment.
Then, I have the idea of accurate measurement and placement, but I decided to create a new tool. It use a completely new system and new code, it becomes grid modeler. So they serve different purposes But yes, may be it is useful to add some edge-snapping to super sword. I will consider that in future Thank you!