It depends.
It really isn't feasible if there's a huge player base. I simply can't see a way that a thing like that could be supported for potentially every person in the game, as cool as it would be.
Though, if we DID find a way to do it, even if a limited one, it'd probably be a little while down the road.
Trinity Reign new event. Create your own dungeon send us the drawings 3 winners will be picked and the dungeons will be implemented into the game with the next major update. the 3 winners will get the special dungeon prizes.