The DLC felt completely unnecessary. It didn't add anything to the story, it didn't develop Elizabeth, and it didn't give me more of Columbia. I got to play a less capable version of Booker that was losing her mind and constantly rambling nonsense at herself over a radio. I got to sit through a Saw-like torture sequence that served no purpose beyond being one of the most gratuitous plot devices I've experienced in a video game. I was forced through one of the silliest retcons of a character I've seen since George Lucas telling everybody Guido shot first. I got a game ending that let me experience a woman getting beaten to death with a wrench so that the first Bioshock could be just a little more convoluted than it already was. Staple onto all of that how we've already established via the original Bioshock Infinite ending that this is only one possible timeline of an infinite number of dimensions and the "progression" of Elizabeth's character into a powerless tool becomes all the more meaningless.
We already had our fanservice DLC for rapture, why couldn't we got one for Columbia? Saddens me we'll never get to see that piece of content.