The whole Doral resort area gained its fame initially because of the annual PGA golf tournament which was held there at Doral Country Club. The course was known as an extremely difficult one, and it developed a "reputation". The tournament itself had a great monetary purse, and was known as one of the most desired tournaments in which to play. Sort of like the annual "Crosby Clambake" at Monterey, Ca's Pebble Beach which was hosted by Bing Crosby. In it's heyday, Doral was one of the big boys too.
The field of golfers naturally was one of the best, as every golfer wanted to be seen there, and wanted to win there, and over the years the tournament, golf course, and resort grew in fame, too. Because of the reputation and glitz, Doral became one of the "golf meccas", to which amateur golfers from all over the country flew with their buddies to experience. Was sort of like the Pinehurst NC area has always been.
Marriott tried to capitalize on all of that, but after many years, the tournament lost a bit of its glamor, and now the resort has suffered. I think the area adjacent to the course slowly drew it down. The whole experience became old. Several of the old-time big tournaments across the board fell on hard times. The hosts from Hollywood who held their own tournaments (Danny Thomas, Sammy Davis Jr, and others, slowly died off, and Doral has gone the same way.
I also think the demise of the aura of Doral can be attributed to the rise and popularity of the TPC golf course and tournament at Sawgrass in Jacksonville, Fl. For over a decade that has become one of the golfing meccas for amateurs. The prestige of the tournament (now considered the fifth "major") has superceded that of Doral.
Doral is still a big tournament, but not as much so, and the magnetism of the course and resort has faded. Simple as that. Can't see it becoming any better. Still a nice place golf-wise, but before, golfers ignored the location just because they wanted to be there, airport or not. Now, it seems to matter.
Personally I think George Bush had a lot to do with it, but.......