Guess I already owned The Missing Link, shows $4.99 for Director's Cut. Now I just have to figure out what exactly I'm gaining with this -- "fixed boss battles"? That it? Confused because one site called the Director's Cut "Basically DE:HR with The Missing Link included"
Edit: According to the Wiki: "The Director's Cut features approximately 8 hours of director's commentaries and a 45 minute “Making Of” video. It also features an improved visual engine and lighting system; fog and smoother shadows; with The Missing Link DLC now integrated into the base game. Enemy AI also received a polishing."
With the exception of the "making of" and 8hrs director commentary, seems like a lot of fixes they could've just patched into the game, but oh well because on the other hand most developers these days dont even bother making a bunch of fixes two years after their game shipped. Hate to admit but there are many other games I'd gladly pay a fee to have them get additional attention from the developer in the way of fixes but they won't because they're a couple years old.