User blog comment:MarineroLelouch/Power Ranking and Classes./@comment-24066070-20140211083758/@comment-7418318-20140211105644

As much as I'm a fan of Lucy, I think Mashima's decision not to make her a candidate yet was the right one.

Lucy has the necessary raw power, intelligence and compassion to be S-Class, but she's too naive and lacks confidence in herself far too often to already be ready for the promotion. And quite frankly she's also a bit too lazy on mission-going (which she only does to gain enough money to life) and training (which she only ever did for the GMG as far as we were shown).

Once she takes care of those aspects, she'll be a hell of an S-Class mage.