New Redemption Grab Bag now includes an assortment of 500 cards from five (5) different expansion sets. Available at Cactus website.
It's hard to disagree with SotS, but one major drawback is the potential for giving the opponent a D9 if they have Damsel, Messenger, Vittles or Outsiders. That can be as much of a game swing due to card advantage as pre-errata Mayhem.
Not to mention that SotS can take out 3 of the 4 characters you brought up.