In Episode 13 of DAIMA, "Surprise," a mere Megath child is able to hold an edge over Goku, Vegeta, and Piccolo in battle. Megath children are incredibly strong, and most Dragon Ball Z characters ...

That would make the final fight a UI tag-team (or fusion) between Goku and Vegeta to take down Jiren, and secure the win for Universe 7. Again, this is all up in the air, so the details could be ...