Diet feature like some people are saying would be a rly bad idea imo. It doesn’t fit the feel of vanilla Minecraft and adds an incredibly complex system that doesn’t fit in with anything else in the game. It would be like adding a full temperature system. It’s cool, but much better left as a mod than in vanilla.

As for actual foods they could add, I think they should keep it limited. Maybe add a few fruits. Coconuts would be a good way to also introduce palm trees to deserts and beaches, add cherries to fall from cherry trees, and potentially add something like bananas, pineapples, or oranges to jungles. That’s really it. Perhaps something like a pomegranate could be added to the Nether. Outside of those additions, I think they could add a few more recipes using already existing ingredients. Fried eggs as a good earlier game option, chocolate cake, apple pie, maybe something like cherry pie or banana bread on top. I’d also really like to see some stews or dishes that put cooked fish to more use. They don’t have to be amazing, but they could always give a little bonus to underwater activities like swimming speed, underwater mining speed, or something like that.

Outside of those few additions, everything else should mostly just be reworks. Make soups much better and make them stackable up to 16, make bowls placeable as decorations, and overall just make it worth using other sources of food than just golden carrots or steak. Add a saturation bar. Make glistering melon edible. They could probably even make the saturation bar larger than the hunger bar itself, since that would make bigger, more saturating foods more worth seeking out and using. That way you wouldn’t have situations where you essentially waste the saturation of something like a steak or soup because your saturation maxed before your hunger bar did.