Take a course with wide fairways...
For a hypothetical "tour" event, grow rough strips and rough islands in the center lines of the wide fairways,
creating two (or more) narrowed fairway options.
With creative hole locations rewarding the proper angle, and the narrow demands placed on the tee shot for
a tour player, you can toughen up a golf course, create strategic angles, and not fark up the course for real golfers.
The rough could be a mix of deep and "flyer producing".
I hated playing courses that narrowed fairways taking away angles, but also hazards (Merion and Pebble fairway bunkers)