1. I think u could make it so if you fail to kill the shark 3 times in a row, (because you're starter and u have no spear) it would just go away for about 10 - 15 minutes ?
2. You should definetely add more uses to scrap. I mean all there is to it right NOW is tools, a few chests, the water purifier and then the cookery. I mean yeah ur making a lamp so thats cool i imagine its going to use alot of scrap, and obviously if there's a lamp there's going to be a night time which im excited about, so about the ideas for scrap. I think as u start a world, there should be another island, and it has an NPC ? or something like that and then u can add a trading station, and trade scrap to planks, or rope or something like that. or just add a thing like researcher, which researches scrap and turns it into another metal like copper, u make other machines out of that that help expand ur house and make it easier to survive.
3.Also, can u do something like a extended/upgraded hook with rope? it would make sense that if u add some rope to your hook it makes it longer :p
4. I also thought of one thing when i was making my cropplots and stuff.. yeah we need plank and rope.. but from where do we get dirt ? Maybe you could add dirt to barrels? And speaking of barrels, if you could add leather and then maybe you can add backpacks (which obviously increase your inventory space) but lower the inventory space? because 15 spaces for inventory excluding the hotbar seems a litle bit too much.
And these are all of my ideas. i have no idea if they will ever come to the game but hey, if they will im happy :D (Btw i didn't include the previous ideas cuz i wanted to be original xD)
-Kjuwz