Not gonna lie, I really hope we get a full release of this some day, from different clubs using different shotguns, different items, dealers with special abilities (randomizing items, racking the shotgun at will x amount of times a round, etc.), maybe purchasing upgrades, or organs in case you need to replace them, or even a "survival" mode where you go through the whole story with no saves, you lose a game, you die.
Of course, like everyone else also said, a multiplayer mode would be incredible and a ton of fun.