That would be pretty easy, just make a custom theme for OS6, not custom6, add a hidden dock for when you scroll up the dock will show and scroll down the dock will hide, it will then have 3 or 4 rows of icons when you scroll up, with about 5 icons per row. If you want to get rid of the name banner anyway, you could however add specific ones "instant messaging" stick BBM, MSN, and some others in there, "social" add facebook, myspace, twitter etc.. in there.
Then to elaborate on that, add a sliding dock so when you go left or right, a whole new set of icons appear, there are atleast 25 icons on a blackberry, so 3 rows of 5 would be 15, then one more tow would be 10, however, I wouldn't know how to keep the aspect of the OS6 dock by still having 'Frequently Used' etc without having the name bar.
I have only been making themes for two weeks, I am a complete newbie, but I can create sliding and hidden docks pretty easily, bit of hand coding of the SVG when you export it from composer is all it needs for it's functionality of the way I said I could do it.
Hope this helps someone who is going to attempt to make one anyway