The WTS already has a version of that called the "substitute CO."
Oh yeah, I had forgotten about that. I attended a cong for a while where the PO was also a sub CO, he was out on assignment more often than not.
Another time, when I was in a different cong, a planned visit by an actual CO visit was canceled last minute, and we got the local substidude instead. I think everybody relaxed and breathed a little easier when they heard the news that it was 'just a sub' that would be visiting.