In case anyone is unfamiliar with how the Tournament of Power works in Dragon Ball Super, you have 8 teams of 10 in a battle royale to knock all the members of every other team out of the ring, and the use of weapons and healing items is prohibted.
However, Zen-oh, the supreme god of everything who governs the rules for the tournament, would actively allow the "no weapons and items" rule to be broken if he thought the technique that used it was cool.
Which makes you wonder, 8 franchises with a playable character in Smash were to participate in a Tournament of Power styled battle royale, would characters like Link, Marth, and Cloud be ineligible to enter? Or would Zen-Oh allow them to break that rule and join because he's a fan of their games?