JES II,
You ask a good question that perhaps can be best answered by a few of the superintendents that post here. I believe the purpose of some sub-surface systems is not just to suck the water out, but to actually allow for the control of the moisture level in the soil in order to maintain ideal growing conditions. Again, someone with more expertise can better address this.
I guess by my original question- will what they are doing at the Stadium Course start a new trend in design and construction- I should have asked could or should it start a new trend? Like, for example, the trend of installing sub-air systems into greens, the trend of million dollar plus landscape budgets to transplant mature trees and/or create "natural" waterfalls, etc....