My JKD will not be your JKD, after we both reach profeciency in basic JKD techniques/concepts, and understanding of our weaknesses. But you are not understanding JKD concepts if you never trained in basic JKD techniques for sufficient time to learn what your weaknesses are. You can't just read up a bit on JKD and make an assessment. This is why JKD people want to train with and study other arts,.. to bring us out of our condition of ignorance. There are definite techniques Bruce believed one should train in and try to master before daring to cast them aside as not worthy. This is a major reason so few try JKD.. it is daunting and conceptual, and few really understand it even after trying it for a while.. and most cannot put into execution the flow from range to range, seamless transition from technique to technique in various arts, without stopping to think about "what's next?" This rigidity makes executing JKD impossible. It takes time and meditation on the concepts and natural ability. Bruce indeed said "not one in 10,000 men can do my art."
I think since it was Bruce Lee's art, and he acknowledged that it was HIS art, he wanted it to die with him, and he wanted us to find our own personal way or art. Martial arts seems so much more rigid when you are doing it someone elses way instead of the flowing way of your own mindset.