Boo! Might have to reconsider then. I used the Pi Zero W for FullPageOS for a while but performance was absolutely terrible, recently switched it out with the Raspberry Pi 3.
The Pi Zero really has an awesome form factor, but many of the projects I come up with either require more performance (i.e. needing a Rasperry Pi 3) or are simply better suited for a microcontroller such an ESP32 or ESP8266.
I guess it depends, but having the unifi controller on wifi isn't always the best of idea. If you misconfigure the wifi or just change the ssid/password the controller looses access as the settings are applied. And now you can't even connect to the controller to fix it.