Also bearing in mind the increasing number of contestants anything that appears outside of the box is going to stand a great chance of at least getting into that first 4-way melee. Materials might have changed over the years, but I still see mega expensive contraptions fail at the first hurdle. My current temptation is either a shuffler drillzilla drive with a mahoosive drum, a hoard of 100+ minibots or a unique four legged walker if I could ever work out how to scale up a servo to HW size.