Allow Llama's to work like Horses

Llama's might be the most useless mob in the game. You can go on their backs....but to do what? You can't control them unless they're leaded so.. what's the point? I have a solution. Make Llama's work like Horses and allow the player to mount them with a saddle and a carpet for customisation whilst allowing the player to control it's directions- whilst also introducing Alpacas to adopt the original llama behaviour where you can only lead them. Also unrelated note- Camels should be able to hold storage.