Charm is Godmode. Its not a skill that scales well. If you could charm unhindered right now, NOTHING in the game would be safe from a beastmaster solo. And believe it or not it would continue to get even stronger. By 99 charm, unhindered, would break the game and then put it back together so it could break it again. Charm is the Chuck Norris of job abilities. Of course they have to regulate it.