Random Mythic to retail!

With this idea, there would be an item called random dungeon stone.
With a full group of 5 players, the owner of the stone would place it on a pedestal, and everyone would accept the start of the search. This random dungeon would cover all wow expansions.
We would have to analyze the calculation to make the ranking, but I don’t think that will be a problem for Blizzard.
The pedestal to place the stone could be in the capital of the horde and alliance, and what do you think of the idea?