Trees and wood expansion

I know that wood types are a hassle with so many things to work with, but if you guys could figure it out I have some great ideas. New tree types! Possibly things like pine, beech, maple and maple variants, banyan, baobab, elm, sycamore, cedar and hickory. It would be hard to add all of them at once of course but I think they should be considered and gradually be implemented. I'm just craving more biomes. Another idea I thought of is sap. Each tree can have a different type with different aspects. For example if you placed a weak tool in a crafting table with a sap you could repair it, similar to the anvil and adding tools together. You could just right click a tree with a glass bottle to get some sap, and it doesn't stack to apply challenge to repairing items. Sap could also be used as a healing agent, maybe in a recipe or just eating it to heal you. Each type of sap could have a different effect, and could be used in potion brewing! You could also make traps out of sap, to trap mobs or players. I'm going to add another suggestion about cave biomes but I'm honestly so excited to see new things from you guys.