If it’s a difference it’s a difference. It could be a pure aesthetic difference and it’d still be a difference. It could be 2 cards with the exact same stats and effects and properties but one has a longer hair or whatever so they’re still different.
Beaters with no effect will never be relevant nowadays (unless they had so high atk that could otk on their own). if they were then everyone would just be playing united we stand and enjoy a 2400 atk bonus on any weak monster. You could achieve 3000 and more attack first turn this way with certain decks. However beaters, especially ones with low defence, are simply too counterable in current meta.