A couple of suggestions about existing recipes
1) I dislike having to use paper scraps and jagged glass to create arrows. You can create a perfectly functional arrow by sharpening a stick, and I don't understand what the paper is used for. (fins?)
2) Sometimes a medium campfire gives 2 ash, other times it only gives one. What gives?
1) I'd like to be able to craft a hobo knapsack by slinging a stick over my shoulder and tying rags/shirt/cloth over it.
2) I'd like to see some nylon bungie cords, like the kind you use to tie off a truckload when you are moving furniture.
3) How about a bike or moped? Or maybe a crank generator?