I think the job system is kind of neat, after mulling it over a bit. There was a long post that I linked earlier that explained it quite well. Obviously it is incomplete at the moment, but the idea of jobs being more like specializations than new classes is a good way of thinking about it, I think. Once classes have the option of more than one job (as with Arcanist), it should make a bit more sense to the people who are having trouble with it.
At first I was kind of disappointed that unlocking PLD did not mean I got to start fresh with a new job at level 1 and learn my skills gradually as I leveled up. I really do enjoy the leveling process. However, you do
still get that experience because that's what the first 30 levels of GLA are. It's also good that since the job is kind of a specialization, your base class levels up. There aren't separate levels for GLA and PLD.
Reading more about it, you get special job abilities, but it limits the abilities you can pick from other classes. Instead of a subclass ability slot every five levels, you get one every ten, and are limited in choice to the two classes that make up your job (in PLD case, GLA and CNJ). Of course, since you can still pick from your primary subclass's abilities, that'll mean I'll have to level my CNJ up more than just the initial unlock level. It's kind of a neat way to get players to level multiple classes/jobs. Since I have to level CNJ in order to unlock more abilities for my PLD, I'll end up unlocking WHM on it.
Oh, scratch that. I thought WHM would be CNJ and some other class, not GLA.
I thought it would daisychain your subclasses so you end up wanting to level basically everything. I could effectively level GLA and CNJ and have full access to PLD and WHM without needing other classes.