A cool feature for the Pi Zero W
A cool feature for the Pi Zero W (because it has no Ethernet port) would be a soft Access Point that a phone could connect to with WiFi and browser and set up the Rasp Pi wireless network settings if it can't connect during boot up - I've messed with a Microchip powered IoT device that had a feature like that (via a button) and it was very useful and didn't need a special phone app .
We are already working on a on-screen configuration wizard. Using this tool, you will be able to setup your wifi using a keyboard and mouse. This will make things a lot easier, as all units are connected to a screen and for sure you can hook up a keyboard on-site.
If this is released (probably with an image update within August 2017), this proposed feature will not be so useful.
Thank for your suggestion though!