If a smart relay with dry contact, would you like it will be a wifi or Zigbee device?
I need a zigbee one and I was shocked to find there is none. Though it is clear there should be both, wifi and zigbee. I would also suggest making some physical jumpers in mini smart switch R3, making it possible to switch between wet/dry contacts and between normal closed and normal open modes. This way you’ll have universal switches and no need for different models.
heard a Wi-Fi one is coming soon
Zigbee. Wifi is too expensive in energy use. Dry contact would be more useful for low DC applications where battery use is more common. Same with powering the switch. DC 4-13 would be best.
Also wifi means you can easily make one with Tasmota or ESPHome. Zigbee hasn’t yet appeared as an Arduino an Arduino library, last time I looked, so there would be much less complication from home made devices.