Whilst it see where you're going with that. I played an MMO called city of heroes/villains for years. After being out for a very long time and people complaining of lack of content and saying they could do better, the devs finally gave in and released an update which gave you full cteative control to make your own storyline, missions, characters, the works.
It was awesome to begin with. The amount of content doubled if not tripled overnight. But that was the beginning of the end of that game, therr was too much content. People stopped giving a shit about the lore of the actual game and just devised power levelling scenarios to min/max their toons asap. The good content was hidden in a massive pile of crap. And the original story didn't seem to matter. The game no longer had the welcoming easy going feel to it anymore which alienated new and old players. Basically it was the beginning of the end of the game and eventually went the way of the dodo.
There's no doubt this game needs more content, but it has to be done right otherwise this world and lore they've built could all be for nothing.