Add cities to Minecraft

You know how villages are the only settlements in Minecraft besides your base if you are on single player? I don't really like that, I am thinking maybe we should add some variety. So now I want to add cities, giving it more variety, spicing it up a little, you know? There will be 3 variations of cities: The one we already have (village), the city, and the big city.

The city will be just a larger version of the village, and won't have villages surrounding it. It will have better structures and will have shops, and a second Iron Golem. The new criminal has a 5% chance of spawning here.

The big city will be much like any other big city IRL, big business center with lots of skyscrapers somewhere near the middle, suburbs, shops, and for the first time in Minecraft history: naturally generating paved roads! The big city will have 5-20 Iron Golems depending on the size of the big city generated. The criminal mob will 10-25% chance of spawning in smaller big cities, and 30-45% chance of spawning in larger cities. This time, villages spawn on mass within a 200-1,000 block radius of a big city depending on size. Also, especially as we get closer to the skyscrapers, loot gets better.

The criminal mob will have AI comparable to various mobs. Criminals will try to kill the player if they are nearby. Criminals will have a 10% chance of spawning with a bow. Criminals will attack the player, and run away from Iron Golems. They are attracted to chests, your valuables aren't safe from them!