Unless I really need to show two things side by side, I always maximise everything, and this on a laptop with twice the screen size of the tablet. Most applications are optimised to make use of horizontal and not vertical screen space, so putting them next to one another usually doesn't give very good results, and putting two long strips of horizontal application above one another doesn't really work either. As to overlapping: what's the point in being able to see one unmaximised application and then one or more applications below it that you can only half see?