I could, but that's pretty much how it is now anyway. For example, if there were 3 'Home' screens, I would probably just fill them up with the current Home screen, the Tools+Web screen, and the Apps screen. It's just that presently they aren't "next to each other". But they don't really need to be, since you can only see/use one of them at a time.
In the next version I post (later this week maybe), I will include the 'Experimental' skin with 3 home screens side-by-side.