Well, now that the nerd rage is over, I would like to throw out some ideas for jobs that transition from DoH classes.

For instance, alchemist can perform a quest in which they learn the art of potion tossing and unlock the job of Pharmacist (or some other less dumb name).

Likewise, a miner might take a quest in which they learn to use explosives, and unlock Demolitionist.

I think that would give people who have chosen to craft and gather as a profession a good path to combat. I've just thrown out some general ideas as far as the classes. I'm sure something more "Final Fantasy" feeling can be thought up ^^