Archeological Creatures and Items

In minecraft you have a small chance of finding fossils generate, now we get archeology. Here are some ideas: Make it so there is a chance of finding special feathers or some item and putting it in a reader (new block) would craft a fossil egg. Not dinosaurs but minecraft's old ancient beats and one be a boss that way everyone will want to explore, make it so ancient special enchantment books can be found such as Upgradion an enchantment that if you had enough XP and atleast _ amount of lapis it would upgrade the tool, finnaly weapons and tools from the old unavailable in creative these would be special and very rare new tools for minecraft.