I've seen in many games where players can actually make add ons, that there are a few to actually make custom quests into the game, so other players with the addon can play them.
of course it has its limitations, you can't put actual rewards, and the idea is to make them interestingt mainly by the story itself. WoW has totalRP the secret world has Untold Stories, and etc.
depending on how much the game can be altered with add ons, some of them can actually include cinematics and etc...
but the main idea is this, you can assign a specific NPC to give a new quest, that can be either battle existing enemies, or reach a specific place, or get an item, all of those can be made. you can't add anything to the maps that isn't already there, so any interactables, or enemies have to be there on the map. the fun of it is you can make it more of an investigation quest where you have to follow leads to complete it, harder or easier leads. It's a really fun to add pretty much endless story content, even though we can't add maps and stuff like that.
Is there such an addon for TESO? I haven't seen anything like that so far. or simpler addons like a RP bio.
If there in't such a thing, would that be allowed? I guess if it is allowed in other MMOs, similar rules might apply but still I'm curious. And also what do you think about it? There are many people that don't care much for endgame grinding and prefer to keep playing some story content, even though it might not give actual rewards. Opinions?