Tommy, I guess I'm skeptical because Seminole was designed prior to the advent of the sand wedge, and decades prior to the advent of the bunker rake. I would guess, just in my couple hours of viewing, that I saw 4 or 5 of the 100 tightest bunker shots Donald Ross would ever have witnessed.
As for the greens, I'd guess he'd be surprised at their speed. But after spending four hours or so on Tuesday night hearing "And wow, man, this is the toughest set of greens. And I know you like tough greens! I couldn't believe the ones at Pinehurst, but these really take the cake," and other such fawning superlatives...
... and then after showing up on the range before practice rounds Wednesday and watching these dudes fire bullet after bullet and thinking "Yikes, they're going to shoot one of those damn 61s on my Seminole!"...
... but then seeing how the greens continue to defend the course against skilled but undisciplined play... well, I remain skeptical but we really don't have any clue do we?
I just know what I think. That it's really hard to make strategy and angles and disciplined play matter for elite level players, but that Seminole did it last weekend. And did it sternly, but without descending into what I would call ridiculousness. Your mileage may vary, and Ross likely never envisioned greens running quite that fast. But like, Doak and Coore and Collins definitely can envision greens running that fast on their courses, and they haven't started softening the edges of their putting surfaces or worrying about the chance that someone will hit a short shot defensively.
So maybe Donald would've gone back to Raleigh and softened some slopes. But I sorta like to think he'd have come away with more conviction in the value of stern slopes and hazards than ever, as necessary ingredients to challenge future players.