I would add more animals that could spawn in different biomes such as tigers, cheetas for the jungle biome I would also add jungle wood crafting tables, and birch wood crafting tables same with chests npc villagers expanding villages and building cities i would ass another mode of tranportation such as a bicycle, or horse which you could control I would change the map so if you built a house it would appear on it and i probably have lots more ideas but the list would go on forever