In this particular case, OP said none of the others met their needs. I would like to know what new functionality this one has to know if it’s something I’m interested in or not. It’s not a critique - it’s helping me understand if I want to check it out or not.
There’s no guarantee you can draw a circle through the bottom of the four legs of a table (opposite legs can be off in the same direction). Also, most floors are not perfectly flat, therefore you can’t assume the floor is at one elevation.