Sounds like a nightmare to me to sort out all those captures afterwards.
I'm sure someone smart will figure out an algorithm to do it for you, at least for the bulk. Magic Lantern already has some of it, actually such an algorithm is built into Canon's digic chips right now (yes!) - for their burst silent shooting, they let the digic compute a "in-focus" quality scale and automatically select the best ones. And if you only need one shot where the ball hits the soccer player's head, well, that's even easier to select.
But I sympathize with your reluctance to imagine possibilities of new tech, that's makes the CR people what it are :->
I rarely spray and pray. And even then 5-6 fps are plenty for my usage.
Maybe so, but obviously the high-fps 1d cameras meet a demand. My 120fps example might be over the top as the raw data rates would be ridiculously high, but let's say 15fps 4k raw shooting - I'm positive it'll sell like hotcakes.