There are plenty of posts out there asking for challenge, end-game content or any other such thing.
Challenge means a lot of different things from having to solo using excellent strategy and gear, to coordinate attacks in small parties or to bring together a large number of players.
I'm not even really talking about any of those things in this post.
In FFXIV right now, you don't need to know how to play your class at all. You level up in behest and in guild leves, which is fine, but during those leves you don't need do do anything more than auto-attack. If you wanted to make things go a little faster you could throw in some weapon skills, but there's usually one best option there. The result is that most players go from 1-50 only needing two buttons.
A sad example of this is that from rank 1 to 50 there's a very good chance that a gladiator will never have tanked a mob. They might have gotten hit, but the person getting hit rarely matters in behest or leves.
I know there's a combat overhaul coming and I'm excited about that. I'm also VERY excited about the use of the words 'job system.' Yoshi-p has also said that classes/jobs will be made more unique. All of this is good, but I also want to bring attention to a simple fact about the way we level/rank up now -
A large part of the problem with class/job uniqueness and the FF feel of the game is that most of what we have RIGHT NOW is not being used. The encounters themselves are lacking. Overhauling combat will not change the way behest and guild leves are played. If all of the classes/jobs are made more unique that's great, but if we're relying on auto-attack plus one weapon skill to get through the battles nothing meaningful has changed. SE has said that we won't be able to win with just auto-attack, and that's a good start (as right now basic attacks can win a leve or behest battle), but we need to know that strategic use of all of our abilities will be meaningful, if not necessary to winning a battle.