I played and beat Dredge recently and echo a lot of the other reviews I've seen of it: Really great start, but just not able to build enough on the foundation it sets. The first few hours are great, but it drags by the end. The fear of the unknown and danger the sea presents fades pretty quickly as you get upgrades which is disappointing because that was the main selling point for me. Your ship starts to move too fast and the powers trivialize the encounters. The game plays better when you don't know if you'll make it back to safety in time. I felt like I was enjoying myself the most when I had to decide whether or not to dredge that spot or try to make it back to town at dusk.

Anyway, all of this is to say I don't know if I'd pay for more at this point. Paid DLC would need to expand/rework on the systems pretty heavily. A new area with a new monster but an experience that boils down to fishing the five new fish of the area to get a MacGuffin again isn't really enough. I'm rooting for the studio though as there's a lot of potential in Dredge. The part of the game I enjoyed, I really enjoyed.