I think the addition of a DoorChime or DoorBell option would be beneficial to the NSPanel. Currently I can get a sound to play via a trigger, but it then alarms the panel, and you have to go to the panel and close the notification.
A PA option would be nice to have, where you can send voice to all panels without accepting a call.
I noticed too that my Zigbee based lights do not have a reverse function when bound to the NSPanel, but oddly do with iHost. The reverse makes it way easier to set up a simple light/switch combo.