So, I hope that all of you who are reading this are aware of the Game Theory Video series that is currently in production addressing the lore of Minecraft. For those of you who have not viewed it, it basically goes to claim that the original builders were masters of civilizations, building, and exploration. Upon going into the Nether, they discovered that when someone died, the ground sucked their soul out, thus creating Soul Sand. All that was left was a charred skeleton. So these geniuses tried combining the bones of a Wither Skeleton with Soul Sand in an attempt to bring the soul back into the body and resurrect the diseased.
And thus, the Wither happened. Here was this beast that destroyed pretty much everything it touched. Places in the Overworld were devastated, the only exceptions being those deep underground, in the ocean, or secluded in deserts. With the laws of nature corrupted, when the Wither made a kill, the bodies of the ancient builders became undead, and continue to crawl out of the ground upon nightfall to mindlessly haunt the lands. This explains why zombies and skeletons and other undead being resemble your character.
The survivors fled underground and created the stronghold. Game Theory suggested that it was called the stronghold because it was indeed a shelter to defend the survivors. Now more familiar with magic, those builders devised a plan to create a portal to take them to another dimension where the Wither could no longer terrorize them.
What they couldn't have forseen was that the trip was one way. They were now terrorized by a massive dragon in a desolate realm with very limited resources. Generations passed, buildings were erected, and chorus fruit was eaten until the ancient builders finally adapted/mutated into the Endermen we know of now.
There's quite a few more details that Game Theory adequately covers, but that's the basis of the idea that I am about to drop on you.
Now, I was thinking that there could be a way in which the Endermen begin to recall their days as builders. This would lead to a very difficult quest the player has to partake in to find a block known as the Guidestone. This, which is based off of the Georgia Guidestone, is an ancient block found only when the player places an endrod atop an unlit beacon. When this occurs and the beacon is lit, this device will begin to resonate, but only in the direction in which the Guidestone is. If you are anywhere outside of this field, you will hear nothing.
Now, the Guidestone will be buried in an underground vault. The noise that leads you to here will be an uninterrupted tone once you are atop of the vault. When that happens, you need to dig underground and enter the vault, where you will be confronted by redstone powered Manikkens. (Enchanted Armor Stand with Iron Swords) They can only be killed by fire, so a flint and steel or weapon enchanted with Flame or Fire Aspect will be the only things that can destroy these mannikins, which will attack as soon as you removed the Guidestone from its stand.
Once this occurs, you will need to travel back into the End. There, you will place the Guidestone onto the spire in the middle of the home portal, and that will cause the Endermen to draw toward it. There will be a dramatic animation at this point, some sort of light-show type thing similar to the Enderdragons death.
After this, there will be three major changes to gameplay:
1.) Endermen will begin to build and use tools. Things will start out pretty simple: little villages and hut and the like, but these civilizations will flourish until they are advanced, with redstone and farming and even animal taming, breeding, and trapping. (Watch out!)
2.) Endermen will destroy Nether Portals if they come within sixteen blocks of them.
3.) Endermen will be friendly towards you, the player. One perk of this is when you give them a Totem Of Undying, they will take you and teleport to an underground, sealed crypt that holds some sweet loot, which includes enderchests, saddles, enchantment books, redstone brooches (used primarily to give the player the ability of powered flight when using Elytra, and Enchanted Mob Skulls, which can be almost any mob, though Endermen, Villager, Illagers, Endermites and Silverfish will not be included. Put one of those skulls on in the head slot and your character will instantly take on the appearance and abilities of that mob until you remove it. However, one cannot build or hold any items while in that form.
I just thought it would be another optional challenge to take post End and Wither, with some cool new items and such. If you want to add on or make suggestions, please comment below.