yeah it would be soo cool.. then the crafting of clothes would be and option as well.. i dont know if it's possible to use shark skin as cloting.. if not.. a new animal with fur should be added in the game like a seal or walrus..
a firepit for light is not an option because it will burn down the raft and it's not logical... if you can make metal foundation then it would be and option to make a firepit..