Looking back at TES titles past and the evolution of Skyrim it's interesting to see how user-made content has become an official part of the game. I got to wondering how many examples there were of this happening, namely, that someone should make a mod and the next elder scrolls game include it as part of their next game.
Anyway, how many unique examples can you name?
Here is my list:
Harvest Containers, that plants disappear when you harvest their ingredients and chests open.
Crafting, arguably inspired by CraftyBits and other similar mods.
The way the game levels around you, seemingly inspired by Oscuro's Oblivion Overhaul, being deeper in a dungeon or being farther from a city means higher level enemies. Also keeping bandits in low level armors for example, not levelling up to daedric as they did in Oblivion.
Followers, seemingly inspired by the popularity of mods such as Vilja.
Potion retextures based on color.
Merchants run out of gold, probably inspired by Living Economy.
The name 'stamina' being applied to the green bar instead of 'fatigue' which actually means the opposite, probably from the work of people such as Kobu.
That's what I can think of off the top of my head! What other user-made content has become an integral part of Skyrim?