Yeah but that kind of thing doesn’t exist before TPM. And the idea of the saber was heavy or hard to control unless they concentrated was a behind the scenes idea from the first movie, right?
I’m inclined to agree with you that the idea of precognition in lightsaber combat did not necessarily exist explicitly in Star Wars prior to TPM. But even in A New Hope, you have Luke using the Force to deflect laser bolts with a lightsaber. I don’t know if that implies that ALL lightsaber combat generally entails Force usage for precognition - but for whatever reason that’s the idea I always had in my head, even before the Prequels.
Frustratingly, there are no scenes on Dagobah involving lightsaber training, although there are remnants of this in a deleted scene. It’s unclear what lesson was taught in that scene and there doesn’t seem to be any trace in early drafts of the script either. It would have been interesting to hear Yoda’s ideas about lightsaber combat circa 1980.