A hex is a hex if it has six side-no matter the size. I have some patterns from my quilt guild that have five inch designs that are paper pieced to make all sorts of interesting designs-but they are hexies and made like the traditional ones. There are a couple of books written along these lines. It reminds me of some of the things people have done with log cabins over the years. Tradition is fine and the new steps into the future are equally fun.