This tweak allows you to setup custom springboard layouts for your icons. I have been unable to get Springtomize 2 to do this in iOS 5, so have reverted back to one of my older tweaks to get my custom icon layouts. Iconoclasm from Cydia goes well with Gridlock, which allows you to put icons where you like on your springboard with blank icons
Iconoclasm runs $2.99 from Cydia, and is a pretty nice tweak with many additional icon layouts available from Cydia for free. What do you think?