SwipeDock is a new Cydia tweak off the BigBoss repository that allows users to swipe their dock away. When this is completed the icons spread apart creating more open space in between each icon. The tweak does come with a variety of swipe gestures, so you can pick the gesture that allows you to enable/disable your dock. Along with that you can change the animation determining how the dock disappears, whether it be a translate right, zoom out, or etc.
SwipeDock also has a variety of other options really allowing users to customize how the dock disappears, but one notable one allows users to add an additional fifth row of icons. This row looks great especially when the iOS dock is hidden.
You can purchase this one on the BigBoss repository for $0.99.