Hurdle drills are WORTHLESS. They have no value other than making you good at hurdle drills.
You overestimate the value of plyometrics. The benefits you describe here are largely vague and meaningless, and plyos carry a relatively great risk of injury in themselves. They are generally more dangerous than running.
This is just completely and utterly false - it is nothing more than unsubstantiable dogma. Running simply does not require much so-called "core strength" - it isn't a limiting factor. Furthermore, running itself produces "core" conditioning to the extent that it is required for running.
It is plainly erroneous to ASSUME that these training modalities have helped anyone to succeed. Plyos, drills, and "core" work constitude nothing more than auxillary training in the first place, and it is impossible to measure how much they have contributed to anyone's success relative to the primary training modialty employed by all successful runners - RUNNING!
Do not assume that just because an elite athlete uses a given training modality such as weight training, plyometrics, drills, or "core training", that the athlete actually benefits from the use of the method. Frankly, for all you know, it may actaully DETRACT from their overall training success.