A robot can be robust and sexy at the same time. Look at teams like
60 or 47 (whenever they decide to show their robot.) I would be willing to bet that CD is going to be impressive in their looks as well as actions. And as far as getting picked for an alliance think about this: If you need a ride to the store are you going to call your buddy with the Corvette or the guy with the multi-tone, rust heap. Sexiness is often a tip-off to overall robot quality.