I've decided to not go on with this project, not for now anyway, i made a mod with the new stairs, potted bamboo, the new items, and the new mobs, (and i added the issusioner and illusionist in there cuz why not) , but its a lot of stuff to add, and i cant figure out how to make the normal bamboo work, if anyone wants to help, or just check the mod out, heres the download: https://drive.google.com/open?id=1t1pqlUSAnd4CmOGcvdwRJ_ZiH2QtEU2D
and the Illager beast and panda models are by @ - mbanders, thanks for reading, have a good night.