Minecraft: Legends is a game from the perspective of Villagers, as shown in the game teaser two years ago. Based on this, many people have theorized that not all things in Legends are completely truthful.
Craig Leigh, one of the developers said this to Kirk McKean:
What changes the Overworld forever is us, The First Hero. We United the Overworld against the Piglins. But in doing so, we introduced violence, as seen in the Warriors later known as the Illagers in Minecraft Vanilla. What we don’t know is why the undead, specially the Zombies, attack the Villagers. In Legends, the only zombie variants we see are Zombie Villagers, because they were the only humanoid mobs until we arrived. One theory I had was maybe, like the Illagers, the Zombies turned on the Villagers and now help the Illagers. Yet, in the Minecraft Dungeons (or ROTAI), Zombies do attack Illagers.
Another thing we don’t know is what happened to the other Piglins. After the Great Hog is defeated, we have saved the Overworld. The Piglins can no longer enter this dimension. But what happens to the rest of the Piglins. Now trapped in this dimension, the rest of these barbarians only can wait either for the Hero(es) to fight them or wait until zombie-fication. I say this because in the official Minecraft Legends: Return of the Piglins, the Piglins use Nether Warts to breathe safely in the Overworld. If all their portals were destroyed, their supplies would deplete, meaning that the surviving groups would turn.
Last thing I want to ask is what happened to the Orb of Dominance? It is heavily implied that the Orb came from the End, or more specifically, the Void. (I’m not at home right now so I recommend looking at this Wiki https://minecraft.fandom.com/wiki/Minecraft_Dungeons:Orb_of_Dominance#:~:text=Long%20before%20the%20events%20of,gaze%20of%20six%20redstone%20golems%2C). At the time of Legends, the Orb’s host is the Seer, a Piglin who advises the Great Hog on the Invasion. They empower the leader with the powers of the Orb so that they can attempt to destroy the Well of Fate. The Great Hog failed in the end, and the Overworld is (relatively) safe. Yet we still don’t know what happened to the Seer or the Orb. In the Return of the Piglins, all the events of Legends are lost to history, even to the Piglins. We also don’t know how the Orb traveled to the Overworld and ended up in the abandoned castle before Archie discovered it. So, unless Mojang releases another game, we have nothing to go on. I’m pretty sure they will make another game. Maybe the next spinoff will be from the perspective of Illagers, for their side of the story? Or maybe the Undead? We’ll find out soon, I guess.