What are some things you'd want to see in TS4?

So, I own this pear of working electronic cat ears, called nekomimi, that moves according to your emotions. They come in different colors and if sims can have drones, how cool would it be to have a wearable pear of animal ears in the game that respond to your sims emotions?
They already have the different emotions in the game and pets. Its not that crazy of an idea and I would love to really be able to have my sim represent the me IRL.