I feel like this game could really benefit from some more casual modes, or at least modes that make it easier to pop in and play a few rounds with less sweat.
So why not gun game? Typically speaking it's where you go from having one of the best guns in the game and then have to get a series of kills until you get one with each weapon, and go back down the ladder if you die.
You can force everyone to have the same deck.
Likewise, it would be nice to be able to play the game with a "Deck of the Week," where everyone gets the same deck.