A mildly silly statement James. Power and stiffness to weight ratios for drives and weapons, smaller chassis and panel sizes etc will always give an advantage to the lighter weight categories in the ways mentioned. Set against this is the sheer size and impact of the bigger machines, which audiences enjoy. In many ways I do regard feathers as the most sensible weight category for a number of reasons, certainly from a builders point of view- manageable cost and weight being the major ones along with the greater creativity and experimentation that makes possible compared to heavies. Most fans, I suspect, still prefer heavyweights.