The reason being that I think that ban list should either shift in one direction or the other
Group hug and group slug focus on benefitting or punishing the table equally, chaos decks can lead to really crazy stories (but it's typically not well received, so be sure to discuss with the other players before playing chaos) and politics decks can offer a unique playstyle which will never play the same twice
Check with your local game store to see when and how you can join in-store events featuring Mystery Booster: Convention Edition
For example, if I attack with a 2/2 and you block with your 2/1, that's a trade
It might seem bad, but played correctly this is going to draw 2 cards on the turn it is played
In the formats where Tinker is legal, its easy to play it on turn 1 and offers explosive potential, whether you're fetching a Bolas's Citadel or Blightsteel Colossus