i agree completely, turning or aerial kicks might look nice but they're not very effective.
the people at my school frequently train with one of the other instructors, in freestyle and catch wrestling. because they also feel that TKD is a useful foundation, but needs augmentation if there's to be effective striking and takedown defense. they compete regularly however, and I don't because the fees charged for adults to compete are ridiculous.
someone told me muay thai fighters don't chamber up their kicks, why is that?