The charcoal stuff (-80%, quality relevant) was intentional, although I'll hear arguments against it. The goal was to make it easy to make low-quality tools and quite hard to make high-quality tools. To do so, you have to have good timbercraft and carpentry skills, and burn a lot of charcoal/smelt a lot of iron. First pass through the whole thing, I had no trouble making decent quality tools with a reasonably tuned character my first winter. It takes a lot more work and skill training to be able to make mastercraft tools, which I like.
Same deal with the staffs: I left out [noquality] because I modded staffs so that you can make high quality ones, and I figured that the chimney staffs wouldn't be consumed during the charcoal burn.