:3 My Job Guide has a great setup for new classes, but not only that, jobs are pretty diverse in roles because each class has 3 jobs to chose from. So for instance if you cant get an archer -> bard, an arcanist -> time mage may be a good replacement. Or if you cant find a conjuerer -> white mage, a pugilist -> dancer would make an effective party healer/enfeeblist.

Hard to explain but take a look at the guide its pretty good :]