I think Mojang should add:

More Animals: Mammoth's in the plains and they will give you steak and fur, then elephants in the plains and they can drop ivory and then you can make a ivory sword. Monkeys in jungles and they can be a tamable animal and can fight for you. More sea life, add dolphins and you could tame them and you could ride them. Sharks will give you shark teeth and you can make a necklace which will allow you to breath underwater for a longer amount of time. Birds, you can shoot them with your bow and they will drop 10 feathers. Bears, they will be in the forests, they will give you fur and there are different kinds of bears: Black Bear (not tamable) Brown Bear (Not Tamable) Cave Bear (Not Tamable) Panda (Tamable), you can tame a Panda with sugar cane, and Polar Bears (Not Tamable) and only found in the snowy biomes. Whales, they will give you whale meat and whale skin which you can make into armor. Trolls found in swamps in Troll Camps and they can drop random stuff. Camels, can be found in deserts and you can ride them without a saddle.

Items: Bamboo, you can find it by Panda's. Water Helmet and Scuba Tank: With Both Of These Items You Can Breath Underwater All Day. The Crafting Recipes are almost the same and they aren't easy to make: Water Helmet is crafted by diamonds in a square like you are making a block of diamond but then in the middle you add glass, then for the Scuba Tank you do the same thing but you put a bucket in the middle. When the bucket starts to fill that means you are running out of air. There should also be a glider: you can have in hand then right click and run off a cliff, this would be awesome and it would help get people down off mountains faster, they crafting recipe would be a 3 pieces of paper on the left side 3 pieces of paper on the right side and 3 sticks down the middle. Horses (I know you can control pigs), they are in the plains and you can make a saddle and put it on them and then you need a piece of string and you can ride it. You should be able to make a water breathing potion so you can stay underwater longer but not as long as the scuba tank idea

Random: You can put helmets on pigs. You can put leather hats on monkeys. You should be able to make paint with dye and a water bucket. Then you can paint fences, wood planks and bows. I thought bows just so they look cooler.