I would have loved to actively participate in the turmoil of the Vox Populi and the founders
This is my biggest nitpick with the game. Or maybe it's just a testament to Levine as a writer and Irrational as world builders.
I want more! I need to know more about Columbia. About how the city grew to what it is when Booker arrives.
I want to know about the other Founders, like Saltonstall, Marlowe, Vanderwald, Mr. Flambeau, etc. Who were they and why were they chosen? And what about Songbird? Who or what became it? And why is he so intensely protective of Elizabeth?
I feel like I knew more about the city of Rapture and its citizens at the end of Bioshock than I know about Columbia and its citizens after beating Infinite. I'm still amazed by the final product of Infinite, but I really hope we get some lore on Columbia and the founders with some of the DLC.
I'm fascinated by how much the game seemed to change over development. I thought the political battle angle they had going earlier on was pretty interesting. When Comstock looked like this:
But this is all just sort of nitpicking as a result of the final game being so interesting. I just hope we find out more in the DLC.