DREDGE
My DLC idea
I think there should have been a dlc where you go in and explore the old fortress. inside is a skeleton that can't move much but can talk and asks you to do things for him like catching fish using some new fishing mechanic, or a new fish type called the deep fish type. eventually, you have to catch a special fish in the uncharted waters using some items that he gave you that deflects the leviathan and has a 2 day cool down and a special bait that can only be used in uncharted waters. The fish is given to him and he gives you a new engine that is really good and a crown of jewels, which takes up 2 slots and gives 1% aberration bonus and 200% fishing speed. I just thought this would be a fun idea.