Okay, time to get this back on topic.
I would like to see more farm animals, like cows (which we have some of, but need much more), chickens, perhaps pigs. The ability to milk the cows, and the chickens to lay eggs.
I would also like to see higher numbers of the animals we have, so that killing them for their meat and hide wouldn't deplete the numbers too badly. As long as they continue to be passive like most of them are now. And perhaps the horses could settle down a bit. Unless everyone has an iron shield, there's no choice but to kill the horses.
It would be nice if highly populated places could have a wider variety of animals, and at least one kind that provides hides.