Exactly there will always be optimal builds in games like these and while people think all this freedom to build whatever class they want is great now, wait until proper end game content come's along and people figure out what the best builds are for each class. It won't be so great when you have to level this class to 42 for this ability, this one to 38 for this one , another to 49 for this and so on.

People moan about FFXI kind of forcing you to level set sub jobs for your classes not be considered gimp, that will be nothing compared to this down the line.