Jeff Warne was correct that a single centerline irrigation system does effectively reproduce this concept.
What Pinehurst has done post renovation is very close to what I'm speaking of. While the middle line of the fairway is lush the edges are sparse and firm with unpredictable rough conditions contending beyond. When C & C restored the centerline irrigation 10 years ago they were applauded for how it added variability to the turf conditions, but today it seems the collective here no longer agrees or just doesn't understand.
Pinehurst is fortunate that their growing conditions make it possible and in other parts of the world variable height fairway cutting may not be as easily reproduced. That is just fine as the concept I'm speaking of is one that is almost strictly for tournament use. Considering what great lengths courses go through to prep for a professional tournament, a couple extra passes on the fairway mower would seem like less than massive imposition.
This practice would have a very minimal impact on the average player. Their ability to control the flight of their drives along with the distance and spin of their approach shots is not good enough for them to notice any difference. This would be something that would really only impact the very high level of player, top end am's and pro's. Much like the oil patters at PBA tournaments, it has the potential to give them fits during play.
Strategically it will ask players to shape shots off of the tee, even if the fairway is dead straight. To try and place your ball down one of the speed slots on the outside of the fairway you'd have to hit one of 2 shots. Either start the ball over the rough and turn it back into the fairway, ensuring the ball that lands in the short fairway is running down the fairway; or play the ball to land near the middle, but on an angle to run into the short fairway. The second strategy would require the first bounce of the ball to "check" it a bit, so it does not run through, limiting some top end distance. The first strategy would be focused on top end distance but would also require heightened precision to turn the ball enough to clear the rough, but not too much to run into the long fairway in the middle.
Based upon hole locations players may also elect to try and drive their ball into different parts of the fairway to better set up their approach shot. If the pin is located near the front of the green or in a tucked location it will be critical to drive the ball in the short fairway to ensure you can impart proper spin on the ball, allowing them to play an approach over the hole and spin it back. In counter, if the pin is at the back of the green they may try to play more down the middle, using the longer fairway grass to reduce the spin of their approach, allowing them to land the ball short of the hole and roll the ball back to the pin.
In all cases this concept would not limit a players options off of the tee, rather it would encourage them to select a specific shots designed to capitalize off of the turf conditions they desire. It gives the a greater range of options as the variable fairway cut presents them a greater range of playing conditions.