Like all things, complexity needs to be added where it will add depth to game systems.

You can streamline thing too much (What I think of the current state of FFXIV)
You can also overcomplicate things (Christ look at something like 1.0's quest system that allowed crafters to join in)

To me the game as it stands is a very blank slate, and the developers so far have decided to not do anything with it yet. The game has potential, vast ammounts of it to be correct it's up to the developers to see if they can tap it or let the game slide like every other MMO that has seen a flash of sucsess only to be shortly migrated away for the next new flavor of the month.

Without any depth this game is just a gear treadmill every update and the developers are even gating people from playing that the way they want too. Evnetually people are going to throw their arms in the air when they have nothing to do but a few raids a week.