Rolling firmware updates for WAPs
Would be extremely beneficial to be able to roll out firmware updates for wireless APs in a staged manner - i.e. update one at a time instead of all together, so that there's no (or minimal) interruption to service.
At the moment, I can't update access points during the day, because it will disconnect WiFi for all users. If we could do them one at a time, it would become possible.
UniFi has this feature (they call it a "rolling update") and it's really nice. Updates each AP in turn, and doesn't start the next one until the last is detected back online.