I'd love this! Even if it's just co-op (2 players) that would be pretty sweet. Being able to explore the ocean with a friend would make the game that much more enjoyable.
What I'd like to see is something for the other player to do. Mayb…
I have no idea if there is or isn't but there definitely needs to be. I accidentally placed my reinforced hall right in front of the doorway. Ended up just making a new game and starting over.