You will note that the last 30 yards into that Prairie Dunes green are fairly unrumpled. I agree that in general, the more predictable the slope, the more likely it is to be used by golfers. A slope should be fairly constant left, right, up or down, but can have subtle rumples. If they get too big, aren't they just deflection mounds?
Going back to the shot above, I like how the left side of the green has a slightly larger ridge than the right side, but they are both fairly constant. But if the sharper slopes short of the green were any closer, the would probably prevent the run up shot, especially when the hole was first built and longer allowances had to be made for the run in. Now, those run ins are presumably shorter than in the old days and the photo looks very inviting to the run up.
In the modern game, who runs it up from over 60 yards or under 200 yards?