Never seen that speculation before, it would be pretty cool. But as with all things not manifest, we’ll have to wait and see. It will be an awesome sight.
Nor had I. I have seen "it's the church", it's the 12 sons of Jacob with some idea thrown in for the other 12, and several others but none made sense or lined up with scripture. If we understand what "elder" in scripture refers to it makes sense that the lineage of the twelve sons of Jacob are the "elders" of all of God's people.
And, yes, we will have to wait and see. What a day that will be!!!