Okay I\'m a lame brain duh, anyways...
Cooking - Usually there\'s not enough of a variety of things to cook in a game. But it\'s quite simple, take an item then add variants of that. Example: You have white bread, then wheat bread, then pumpernickel bread, then sourdough bread, then rye bread. Its still bread but just ever so slightly differences allow for a lot of different types of bread.
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Sickness - Since there\'s a pharmacist job and healer I think it would good if there were certain diseases that spread around in the game like catching a cold or a more deadly virus (possibly coming from fighting a monster). So for example lets say you caught a cold, then until you heal over time or find medicene your stamina can never fill to 100% maybe only 60% and so on. Or if you get a more wild Yliakum born virus, it might cause weird changes to your character stats and will stay that way until you find some medicene. Which brings me to my next point...
Medicene - I think in addition to regular tonics, potions, and such there should be medicene that can fight off \"sickness.\" Finding rare herbs, roots, or flowers that can create powerful medicene to fight \"sickness,\" would be a job for all curative/restoration jobs.
Medical Book: There would be a book you could buy that is blank but everytime you get a disease it gets written down with how it is acquired, how it affects the host body, and cure.
For example lets take sickess and medicene and put it in a scenario:
Bob was fighting a monster and was infected by the Saggarini monster and got the \"Saggarini Virus.\" Bob can only heal up to half HP and half stamina until he is healed and his strength stats gets cut in half. Bob\'s friend Mary is a pharmacist/healer and has some herblore knowledge experience. Mary agreed to help Bob so Mary has to go out and search for clues to find a cure for the Saggarini Virus. Mary first finds out what monster Bob fought and finds info on that monster. She finds out that this monster is very weak against water and fire. So Mary thinks...hmmm she remembers! There are is a rare plant that grows underwater and a rare red flower that only grows near volcanos. She eventually gets those items and makes the cure and success she\'s the first person to find the cure on the Saggarini Virus. Now she knows what to get so she can sell the recipe for the cure or make a medical database and such....
P.S: thanks for reading, I know it was a lot.
Of course more dangerous diseases, require more powerful alements and reagents which in term might mean they will be really expensive or the materials will be in a dangerous places...