adding to games

I have been wondering why the makers have not added vehicles to the sims 4 games like they did with the sims 3. Also was hoping they would add a farming pack. This pack would included all aspects of farming life, like the vehicles needed to take care of the land, and the animals as well. to include: cows of all type, horses, pigs, chickens, ducks, rabbits, etc. They should also make the worlds more like real life.