Yes, I would love to see this feature.  I get a lot of kids in the neighborhood try and connect to my wifi, and while unsuccessful, I can see their iPhone name appear in the mobile app.  I'd love to be able to get a APNS on my iPhone when they try.  I'd like for the eero app to support interactive notification so that I can swipe down and get one of two options (1) Block Device, (2) Ignore.  Load to see a Today Extension for the app that gives us a quick health check of my eero network at home.

Device notification would be nice.  I have a Ring Doorbell which loses its connection after an eero firmware update forcing me to pop a circuit breaker to power doorbell off/on in order to reconnect.  Losing this connection is important to know (I understand Ring can/should do the same, but eero can do it for all my devices or make is configurable to select a subset of devices).

+1 

This actually dovetails nicely with parental controls as well... If I could flag a specific device to notify me when the kids' iPhones leave the network, I'd be able to tell whether they're trying to bypass parental controls.

+1 please add this 

+2!  🙂

+1. I knew my daughter was home because I got notified when her phone connected for the first time. I’d like this every time for that device!

I would love to have this feature. My old router which was Plume for smartthings had this feature where you would set a primary device per person to when that person would leave and come come. 

Would really want to see it this year, 2023!