One of the useful features of iOS is definitely the dock, where you can place your four favorite apps to access them quickly, no matter which page of the Home screen you're on. If you ever wished to get rid of the dock, you should definitely check out a solid new tweak called Abeo.
The tweak has just one purpose and it does it nicely. With Abeo, you'll have the ability to hide the dock on your iPhone's Home screen leaving space for other icons to fill in. The tweak doesn't add a new row of icons, but rather increases the spacing between adjacent rows of icons to accommodate the empty space.