I could see it making things overly complicated to configure.
I own a 12k generac automatic standby generator which means I have the bypass sub panel right next to the main panel.
I want to monitor the sub panel and that’s easy enough and put 2 sensors on 15&16 and listed them as a sub panel.
Here is where the feature comes in. I still also want to monitor parts of the sub panel like the refrigerator, deep freezer, furnace, well pump, etc which I also do. I ignore all the lighting circuits which I cover with them “mains” of the sub panel.
The problem is math. Since I have no way to say for example circuit 12, 13 and 14 is part of the sub panel on 15 and 16, the the app doubles the load count.
Right now the app say I have a negative 400w balance.
I could solve this I guess with a second monitor but that kind of sucks.