It would be nice to be able to add vertices to the detection zone shape. Due to the shape of my driveway, I'm unable to fully cover the desired zone with a 4 sided shape. 

I currently setup multiple overlapping zones, but based on some initial testing it looks like I only get notifications if a person/vehicle is completely within a zone. If that's true, then it's basically impossible for me to setup a zone that covers the area I need without also including areas that I specifically don't want (eg street/sidewalk)