I think they should release an open world DLC for Infinite. Each game starts with Booker in the office and the player can choose what map to spawn in. Throughout the maps you can find a tear that changes the scenario from what Columbia is like at the start and what it's like during the Vox's revolution. In the first scenario, Booker and Elizabeth can freely roam most of the maps while in the second they are constantly under attack. There also would be respawning NPCs. The player can also choose what outfit Elizabeth wears. You'll have to find Vigors and Gears throughout the world. The maps the player can visit are those from Bioshock Infinite's main story but also new ones e.g. a Mall like area and a suburban area with picket rows and wooden houses as well as a rural area with a forest and farmland.