Just a hand here:
Medicine
antidote
extracts
prescription
I'd guess you're a latin derived speaker like me (Brazil here!), but back to your idea...
Well, i guess i like two of your ideas, one is the medicine one, mainly because we need more usefulness to the Health screen, how about a medicine/antidote list with their quantity by the side? There would be no need for a new skill or job, the Alchemy skill would be enough for it, since alchemist were not only looking for turning anything to gold, but they also looked for elixirs and other things like it.
I'd love to see a medic perform necropsy to improve diagnosis skill and try finding a medicine through experimentation, which would, depending on the skill, cause reactions (even death) to the "victims"(could give some use for that gobbo prisoners
) and unlock medicine/antidote creation (random chance depending on skill, just like ore smelting) . These medicine would vary the effect based on the skill of the one making it (masterful medicine would have 95% probability to work and it would go down by 10% for each lvl).
I'd also love to see some improvement on hospitals, such as misdiagnosis, infection control and such things... HYPOCONDRIAC DORFS ANYONE?
The only thing i'm afraid of is a stupid diagnoser prescribing ale as medicine, since dwarfs are kinda alcohol dependent fella's...