I'm not sure how much a demand for this there would be, but I'd like it if there were a button that let you choose whether you want to eat automically or not. That way all the annoying people who want to starve their characters couldn't be given food and kept alive indefinitely, while it wouldn't effect the ones who are just sleeping because their players are busy IRL.
Plus one of my characters is in a situation where she's like to take her food somewhere without eating half of it on the trip; I'd much rather just feed her healing food than have her waste the little bit of regular stuff she has.
It may also be fun for unreasonable business owners; "Take this food to trade, and don't you DARE eat any!"
