I guess you could turn specific monster parts into booze or special weapons or something.
I do remember a monster hunt side-quest/bounty board that you have to kill a specific kind of giant snake or something like that so that the old guy that runs the sundries shop (which also raised 2 of the playable characters) can make a wine out of it's blood.
The booze part can be done, I would imagine. And the idea I tossed up is a bit hardcore, I'll admit, and would add tons more detail (IE- tons of work, and best to wait until at least the next DF version release), but as of now, we can enjoy it as a standard mod as it develops.
I would still recommend it as at least something that can be put on the back burner for those that really want immersion into the Final Fantasy universe (consider it an open invite modding option after at least the first release of the FFMod), and can be worked on as a side-side project.
EDIT:
Didn't notice a release link was made already.
I'll admit, making esper v. esper battles in Arena Mode is pretty fun. Started off with Ifrit v. Shiva. It ended with the upper half of Shiva completely missing (or simply gone), and Ifrit left pretty badly cut up.
Speaking of Ifrit, Legends mode made him a law-giver that had a 2-year term, until a dwarf killed him. This is pretty neat so far.
EDIT EDIT:
I've noticed something in Arena Mode. Espers are so damn powerful, a consistent autopsy report of their victims shows that they're missing their upper halves. Ouch. Only other espers are lucky enough to retain more than half of themselves post-mortem. Phoenix fortunately turns into a pile of ash.
Also, for the hell of it, I sent Bahamut up against an army of bears (at least 80 of them). All of them are half the bear they used to be in a split second, and Bahamut is pretty scratched up.
EDIT EDIT EDIT:
Made Final Fantasy PC-equivalent dwarves with ultimate equipment, 1-on-1 devastated a no-level bahamut no problem. Now 2-on-1 (candy sword and silver hammer both grand masters in candy armor), but now against a grand master Bahamut. result's Consistent with Final Fantasy. Bahamut at his best (lvl. 99) can't even win against 2 lvl. 99 dwarves with respective equipment, no less even put a scratch in them. 1-on-1 gives the same result (lvl. 99 vs. 99 in candy). And one more 99 battle, but naked dwarf vs Bahamut, Dwarf almost won. Definitely enraged him. His muscles are the same color as his scales is putting it simply.
Almost bit off Bahamut's head (arena mode control over grand master Urist McNekkid). Unfortunately, he belched while I was in the process.