I think they should add some carnivores (tigers, leopards, etc.)
what mobs should minecraft add next update?

Are hostile mobs technically carnivores. You see them attacking living creatures, and you never see them eating plants.
I think they should add a kind of villager called a soldier, it could attack hostile mobs with weapons, and a villager turns into it by being near an armor stand holding a sword

I MADE A FORUM ABOUT IT:
https://www.chess.com/clubs/forum/view/enderman-jockey
Someone suggested this being in the end, and I think it would be fine if half of only half of the enderman are enderman jockeys.
So many things should be added to Minecraft.