I feel like Mine Craft shouldn't just add new ways to hit people, or to hit red stone. I feel like they need to add more things like biomes, mobs, ores, and uses for certain items! One of the main things could be a new group of ores; Ruby, Crystal, Amethyst, and Copper. Why? Because these are key things to a lot of what items could be! For instance; Ruby could be found near lava and be slightly stronger than Iron, but not as strong as Diamond! Crystal could be a lighter variant of Diamond, and have .25 more attack and 10% faster mining, but break 25% faster. Amethyst could be nearly as common as Iron, but a little more rare, and make some building blocks. finally, Copper could be an insulator for red stone, but would carry the current up and down directly. Finally, I wish that emeralds had more use.... Duh.
My final topic is to add more details to the beach and jungle biomes. How? Maybe add more structures, or have certain MOBS like big hornets, jungle spiders, and more be added to an underground jungle! The beach could add sharks, and visible fish! Lastly, I feel like they should add new mechanics to the HUD. Such as thirst, giving a new reason for water buckets. Maybe even have a water purifier! Also, they should give you slowness for around 10 seconds if you fall from a great height, and mining fatigue if you're really hungry or thirsty.