Adding (lots of) icons to home screen on ICS tablet
Go Launcher

I use this app (instead of HTC Sense) for my HTC Sensation. This works great, and there is a lot of different themes and plugins for it. Great if you're tired of the standard UI on your phone!

It also solves your problem, when you can add multiple items for your different screens. (Just tap on the ones you would like to have easy access to) :)