First off, love the game thus far. I look forward to seeing the finished product.
As for my suggestions:
Raft related suggestions:
– A hammock. I think it would rather nice to be able to add a hammock to the canopy so that you can sleep/save on your raft without being weighed down by a bed or fearing the bed falling into the sea when a shark rams you unexpectedly.
– a water still for the raft. Granted you will still need fiber but you can collect that from islands.
– A stove for the raft. Not a biggie but would be nice to be able to cook while you sail.
– A way to lash fish traps to the raft so you can use them while at sea.
Misc Crafting suggestions:
These are more the sake of realism.
–Clothes. Yes, yes you start out with clothes but there is no way they would survive extended periods of time in such a situation. Further formal shoes and flats are not at all ideal for these situations and you would be forced or inclined to ditch them, favoring something better suited or bare feet.
–A leaf compass (basically would require are piece of magnetized metal, a leaf, half a coconut, and water). I list this because it would be a neat touch.
–Animal traps. Since we have bird and fish traps. Might as well have something to help with hunting animals. Maybe spike pits (10 or so crude spears, 10 or 15 palm fronds) or something else.
It would be nice if chairs were functional. It is not necessary, obviously, but it would help with immersion. It would be nice to be able to sit on the raft or beach and watch the sunset.
I have a feeling this is planned but will mention it none the less. But it would be nice to customize your character.
My final thought/suggestion, a journal. The idea would be, for those who wish to do so, it would provide a place to take notes. Further it would update a bestiary, so you can see what flora/fauna you have encountered and learn some facts and perhaps get useful hints about what they can be used for, and/or how to deal with them.
Thank you, and I look forward to experiencing the game through its development.