It would be really nice to limit the amount of notifications received within a certain time period. i.e. notify me only once every 2 minutes.
I have a zone to notify for people detection when crossing a boundary but sometimes if the grass is being cut or I'm going in and out a few times it will blow up my phone with a thousand notifications.
Smartthings has this option on some of their apps called "Minimum time between messages" and you just put in the number of minutes you want to lapse before another alert is sent to you.