the gripes and alot of people quitting is because of the responses and Yoshida's vision statements. Like the following:
Cannot be complex game mechanics because it might confuse new people to genre.
Cannot have guild based endgame, because people without guilds cannot do it.
Cannot have randomized attacks because it will be too hard.
Cannot have unique stats and gear because it will be harder to ballance.
Cannot add X because ps3 memory limitations.
Those are just some, and all are bad decisions on Yoshida's part. IT might make more money quick and get more newcomers, but it will not make for a lasting deep rich game.
People will give the devs time, the issue is many are not seeing a future anymore. The masses that are quitting do not want a gear treadmill every 3months. SE could add 100 raids, 5000 dungeons, 10000 instances, 50000 quest in the next expansion but if only 2 raids and 2 instances drop BIS gear none of the other content matters in terms of endgame. It will still have the same massive lack of content, that is why people are griping. SE needs to add new content without negating any old content. Meaning they need to find a way for the first raid in the new expansions to be relevant for top tier endgame for at least 2-3yrs. You know the whole horizontal development. If the first expansion is more of the same I see alot of people leaving. I know in my guild there will be so many are saying "I am waiting for the first expansion to decide".