I agree with Mike and Trey regarding the original Columbian CC and its variations as the Honors Club. A great, economical routing using the site's unusual elevation changes and natural features to provide excellent variety, challenge and playability. It was a hidden gem that many knew about, but still flew under the radar.
Only volunteered for a day event at Maridoe (USGA Senior Am qualifier), but got to see play on all 18 holes. It is definitely a brand new course in nearly every respect. To illustrate its challenging nature, a former college player, 10+ time club champion at two well-known Dallas private clubs and contestant in several USGA amateur events, shot 95 from the 6700 yard tees in a cool (for Dallas) summer day. 78 played off for the alternate spots. Smyers (the designer) was in the field and began the round on #10 with two birdies, posted a 78, but did not hang around for the play-off. On another day, a mid-30s former college player with a + handicap didn't break 90 from around 7000 yards, with much of his difficulties occurring on and around the greens.
A well-heeled owner with a strong commitment to competitive golf and a good player himself probably means that the course will get the attention it needs as it matures. He has said that he doesn't care about ratings or how it might compare to Trinity Forest. The two courses are very different and are allowing non-member play through the reciprocal pro-to-pro process. The owner is also making Maridoe available for some outside events with the TGA, USGA, and other organizations. It will be interesting to see how the course and club develop over the next several years.