It would be great to peruse the logs for each of the Eero routers. One way would be to allow for it to be exported (e.g.SMTP) that can be captured by a Mac or PC. Depending on how much NVRAM is free on each eero, you could also keep a ring buffer of as much of the recent log as possible and display that on a per device basis in the app.

I know that a consumer product is not the same as an enterprise product, but with the acceleration of smart homes (which is why a mesh network is essential), homes are starting to look like small offices with 50+ connections. I am told that Eeros can support up to 128 connections. Pretty soon, that won't be enough as IOT ramps up.