I agree that this would be a excellent feature.
Yes, I did just recently. Now, I have the Gen 2 with the 16 sensor in my main panel, and using my Gen 1 to monitor an outside subpanel.
+1 to this suggestion
+1 to this
I got my gen 1 back around September 2019, and that was pretty early on, but I don’t know when it was very first released.