Isn't there a course in China that is like 7800 yards?
If the golf course designers focused a little more on shot shaping and having to think your way around the course instead of "tee it high and let it fly" design. Using doglegs and bunkering to encourage hitting to the landing areas but keep it fair for the average Joe golfer with different tee box setups that could cut the doglegs.
I also thing some sort of furrowing in the bunkers (green side) could add a challenge. Most golfers would rather miss a green in the sand than the long grass. Make it tougher to get up and down from a near miss and you would see more strategic layups.
With the rule change about the wedge groves for next year, playing out of the rough just got a little more difficult. The sand should be less inviting.