I was playing at a resort course with a road through the middle to access cabins on the other side of the course. While preparing for a shot a minivan stopped on the road near us to let 2 kids out to run across the fairway to go feed geese on the course. Those parents are idiots.
When I say "know where it's going", I mean within a 40 yard window. Unless you are playing very difficult courses, then you should be able to stay away from OB and hazards with that. And if a high-cap is playing those difficult courses, that might be why they struggle.
You are absolutely right on the ball speed thing, but generally speaking swing speed is a decent indicator of distance.
I agree with most of what you said otherwise also, but I think if I was making inconsistent contact to the point of it costing 2 strokes a couple of times a round, I would dial it back. Whether it's from 120 to 110 or 100 to 90mph swing speeds, slowing the head down should make it easier to get consistent contact.
You can order Oakley with clear prescription lenses as well. I’ve got Oakley Prizm sunglasses with the Turbine frames (prescription, but without bifocal lenses).
For clear lenses for golf, I use an inexpensive pair I ordered online from Zenni. (Also non-bifocal. I stepped up to the first tee today without switching from my bifocals. Took me about 10 seconds to figure out why things didn’t look right.)