I actually have a few people in my FC who asked if they can stay as archer and not be a bard or stay as a lancer and not be a dragoon. I must say the game indeed does a poor job at explaining the job mechanic. I'm sure most people learn about the job system from the internet and not in game. Heck, they don't even tell you that you need to level another job to unlock the job crystal quest. Instead, you have to go online and look up wikis and stuff. This is not about "hand holding", this is about putting proper tutorial in the game.