Hear me out on this one. Discovery is maybe going to be going on a deep space mission in an age before replicators or spacecraft with huge amounts of storage space. Wouldn't it make sense for the ship to be self-sufficient when it comes to food provisions? If the crew can raise and slaughter their own crops and animals, they'll be able to venture much further before having to make a pit stop for supplies. A character whose whole job is to work in the slaughterhouse and on the crops all day could also be an interesting addition to the crew. They could do a day in the life episode to show how stuff like harvesting corn and beheading cows is done in the 23rd century!