I don't really know if this has already been suggested sorry if so. But have you considered adding wildlife (Pigs/Boars, deer, bears and such) and hunting tools (spear=meat, bows= hides-->leather...). With these new resources there are options for new machinery aswell (meat grinder, tanning rack ...) the leather and hides could be used for when you have added seasons (i saw you were planning on adding them) to keep the residents warm and happy :) during winter. Great game already BTW looking forward to see your additions.