When I look at the reviews for this game, I see none that are written by verified owners. I have nearly 100 hours in this game. When I was younger, I loved Star Control 2. I also played 1 and 3. I feel that Stardock has done a great job in capturing the feel of that game. It is incorrect to say that this DLC just added a few repetitive voice lines. There are two chapters that have been added so far and there are many voice lines specific to those chapters. My criticism, however, would be the price given the length. As I mentioned, I have nearly 100 hours in-game, but only about 8 of that is the DLC. And not all 8 are the Earth Rising DLC. When the full game took me around 90 hours and the DLC took less than 8 and there is only a $10 difference in price, there is a problem. At this time, I would not say that the DLC is worth the $19.99 asking price, so wait for it on sale like I did. My opinion on this may change after the next two chapters are released, but only time will tell.
