Jay:
I can't disagree with your choices but would like to know if you are native to Colorado?
I have had the opportunity to have played about a dozen of Jim Engh designs and frankly how the two candidates you mentioned did not finish higher (Lakota) or be rated at all (Pradera) makes me shake my head because they represent some of his finest work to date and that includes the likes of other past awardees like Sanctuary, Redlands Mesa, Black Rock, etc, etc.
The "fun" element is alive and well with both courses and it demonstrates for me how much the bar for quality golf has risen in Colorado in the last several years and clearly Engh, along with others, has played such a role.
One last thought -- the only rating element you cited that I would disagree with is your heavy emphasis on conditioning, walking, facilities and other intangibles. I don't deny their importance but not on par with the first two you outlined.