A big Multi Block Oven that can be set on a timer. No more burnt meat.
It can even have windows so that you can see the animal spinning.
Also you use coal to fuel it. It would make it easier for end game food gathering.
It also would allow for upgrades and could even have a buffer for more than 1 animal at a time.
I was thinking of a 3x3, but a 5x5 that can cook 3 animals at a time would be cool too.

The way it is setup now makes it more difficult to get food than say farming wheat and making bread.
Possible items that can be added could be Ribeye steak and pork ribs that would fill up your hunger bar and saturation in 1 meal. You would only be able to get 2-3 of these per animal, but would give players a reason to cook animals in this fashion.