One nice thing the Asus firmware has is nice grouping of devices for family members which can show monitoring, overall usage and even quick shutoff controls if necessary. Does the Unifi stuff have the equivalent, even if a huge pain to set up?
The best mesh network though would be through a smoke alarm setup. Then you could do backhaul over the power line and then you'd have WiFi everywhere. It would work really well for newer construction where hard wired smoke alarms are mandatory.
Argh, please don't proliferate ethernet over power lines. They cause horrible RFI by turning every unshielded power line into a broadband antenna[1].
[1] https://www.rtl-sdr.com/showing-the-hf-interference-problem-...