FIFA 16 Wishlist: 15 Things Fans Demand
10. Shake Up The Refereeing System

Like with the managers, referees should be utilised to their maximum effect. There are lists online detailing each referee's leniency, but that information should be readily available at the start of each game.
The fans want a quick overview of the referee's real-life statistics, but most importantly, they need to be given noticeable characteristics. Refereeing personalities could affect the game in a sense that lenient referees could let you off with a risky foul on the edge of the box, while strict ones could send your man marching down the tunnel for an innocuous challenge.
Yes, there's an underlying system of that already, and obviously there'd need to be a good balance, but FIFA need to look at every small detail of a football game and expand it in order to create a truly phenomenal experience.