I dont know how exactly this is going to be broken, but it certainly will be
But to see it as less serious a threat than any other archetype shows a flawed, closed-minded understanding of what Group Hug decks can be as well as a lack of appreciation for the fun and spice they add to what is, ultimately, a shared storytelling experience masquerading as competition
You also want to make your tokens bigger so they can stand up to your opponents creatures
Oubliette is a great way to deal with a troublesome creature or commander
The early attempts varied widely between way too strong and way too weak, but no that they have learned not to make these designs to fancy, these cards have become a basic component of blacks abilities
The games tend to be a little faster as well, ending a turn or two sooner than your Core (Bracket 2) decks