Lloyd,
I know I design features that allow the ground game. No one plays it. Even in the picture above, in my experience, a good player would not even bring those small frontal bumps and swales into play with a running shot. Why would then when with a 60 degree wedge, they can avoid all chances of those little bumps deflecting a ball some unintended direction? The only way would be if that approach had a constant, predictable slope they could use, not a bunch of diddle bumps. And, there is always the chance that the approach is wetter than the green itself which would just stop the ball dead.
I am not sure that even if greens dry out, that with balls and clubs these days it ever make sense to play the ground game in the traditional sense. If the green was so dry that you thought a ball would roll 20 yards after impact, you would play the highest club possible and aim 20 yards short. You wouldn't aim 40 yards short and play for the roll would you?
So, I think its the equipment as much as the maintenance. They aren't really even playing the bump and run in the British Open anymore under now normal conditions. A few years ago, when the courses were affected by drought, maybe they were forced to.
The good news is, history and sentiment aside, I really don't think the ground game or the aerial game are either inherently more interesting. Its still the same game of judging how the ground and wind effect your shot and getting it as close to the hole as possible. Its just that the contours that might affect it are now within perhaps 10 yards of the hole, rather than 50.