It's larger and less linear, but it's essentially the same in terms of scope. Kojima has practically said to consider this to be like the Tanker section for Phantom Pain. The story there is good, heartbreaking, and kind of disturbing; but there isn't much there. They added length to the experience with the added missions, but they are all in the same place. Yes, in the story mission it's dark and rainy and every other mission is bright and sunny, but it's the same location. They don't add anything to the story really aside from the few tapes you can find which help flesh out Skull Face as a villain and what Chico and Paz went through.

If the money was worth it to you, I'm glad. $30 is a lot they are asking for what you are getting. I just think it's worth nothing more than a rental considering you could do everything in the game in two days.