Yeah, not a new mechanic. Hunger mechanics tend to be kind of hit or miss imo. It's more just items you can gift, or make to have special effects, etc. maybe even for story purposes
Less coding effort then. I saw you mentioned earlier you want to expand the body type options, I was kinda worried it might be too much of work. Combined with a whole new mechanic around hunger......But more body types sure sounds very tempting. Hope you can find an easy way to make it!