I have put some thought into this, and I decided to share my ideas. My first idea is to add lances to minecraft for jousting on horses. Also i have thought of making minions. This is similar to thaumcraft's golemancey, but i have added a few changes of my own. You can make wood, stone, gold, iron, and diamond minions. As the type of minion went up they get stronger. To make them proceed you need to give that type of minion the material it was made of. The more wood, stone, ect. you give them, the faster they go. You can make them mine, hunt, farm, and even build! I also agree on Mojang making more uses for emeralds.