There should be a "creative mode" were you can build anything with out having to use anything. Also it would be cool if you can chose to have the shark spawn in your would or not, and some other things to build with the hammer/craft, like a ladder, a bigger chest, maybe glass, a fire place to smelt stuff and give heat to the player, better foundation (Like a metal foundation/floor). And one last thing, durability to the tools. (And with better/upgraded tools).