Jim,
I think the idea is a great one, to go out one day and play a course with current gear and an 80% ball, with the full challenge, and walk 20% less distance, " I get to hit it more!" and then the next day go out with a set of hickories and a current bqll(if they are rally suitable for hickories?" and have a same but different challenge, would be great.
Are there balls on the market today that already serve this purpose? I recall hitting a ball I'd bought for my wife, that seemed to go "no where", had a translucent pearl cover.
I assume construction and relative land costs would still be similar to a full scale Pine Valley construction, but maintenance would be less, less turf to cut, fertilize, spray, etc.
To me the biggest benefit would be the advantage of building closer to a larger population base, would be of great benefit.