Launcher Pro Plus gives you the ability to add another vertical row of icons. You can also resize widgets - which I've found very helpful using some of his own widgets. He has a bookmark full page widget- but I resize it and use only 2 wide rows, then people full size widget resized to 2 vertical rows. The widgets are scrollable so this is great.
I also use 3 folders for quick access to: speed dial numbers, utility apps and games. This way I don't have favorite app shortcuts hogging up screen space. I only use 4 screens and one is really not all that necessary. I do like the Sense" theme" idea. Not sure if launcher pro allows you to save multiples or not... only tried to save my active one...