All were made thinking They'd be one offs. Star Wars was always meant to be one movie till George realized it was too long and cut it down to just A New Hope. They didn't know it would be such a big hit. Then they made The Empire Strikes Back without a real end. Return Of The Jedi came along and they ended the story. George had hopes for more but that took years because of Ja Ja Bink's lol. Halo was an adaption of Halo wars as Halo Wars was set for release just after Star Craft. Bungie didn't want to go head to head with it. Halo was a one off game that took off unexpectedly. Never played Mass Effect but I'm imagine it was the same. Destiny is being designed like WOW or Everquest or ESO. Its not a one week, month or year game. Its a game we need at least some patient's with. I still believe its too soon to judge. If your not happy leave it for a while and play something else.