Modern FIFA requires you to memorize complex Right-Stick combinations (Ball Roll, Elastico, La Croqueta). FIFA 07 used a simple "Juke" button (Shift or Right Click). Tapping the juke key in a direction caused contextual tricks based on the player's skill level. It was intuitive. If you had Ronaldinho, he danced. If you had a defender, he stumbled. It felt fair.
The FIFA 07 soundtrack is widely considered the best in the series' history. Playing Fifa 07 Unblocked means hearing bangers like: