I'm gonna have to go with idea #1. I don't like the idea of being a paladin "within" a gladiator. Paladin (for example) should be a job all to it's self. Now if Paladin were to be the main class, and gladiator a subset within it, I think I could deal with that but only because it's a traditional final fantasy name, with gladiator being the specialization (sword w/ small shield for instance)