The obvious answer is wall-to-wall fairway, maintained on a water-starved diet at around 80%. Rough over 1.5 inches effectively cripples a large percentage of the players - not because it takes the spin off the ball, but because they cannot advance it more than 150 yards. Obviously, turf variety plays into this, but I cannot see where rough (as a design concept) has any validity. It is really holdover from the R.T.Jones ethos - and seems at odds with encouraging the ground game.
The Lake Course at Olympic is vasty more interesting - and in many ways more difficult - when the rough lines are cut way back. There are just more options, both around the green and on approach shots. Neal ended up (I did the first pass) consulting at a club in Coachella and the difference, just the act of cutting the grass in front of - and around - the bunkers made an unbelievable difference. That took exactly two days to accomplish.
In America, we would be better served to emulate the game across the pond and let nature dictate things. We seem to have this philosophy of trying to control every aspect of what is essentially a bunch of shaped dirt, covered with grass. Just mow, wall-to-wall, as often as the budget will allow, live with brown when it makes sense and quit this insane arms race of acting like the Stimp Meter is for measuring the length of a club's penis.