I don't understand why you would want a paper pattern of a rectangle or square. It is much easier to cut with rotary cutter and ruler. For the small, independent pattern designers (not McCalls, etc) I'm sure it would not be cost effective to add more sheets of paper with large rectangles drawn on it. Have you priced the oversized paper? And if you wanted to use tissue paper, where do you get access to it and get it printed?
IMHO, the small, independent pattern designers are where the good ideas come from - the big companies just copy them after the pattern becomes popular.