Hard to believe you guys don't look at Melo's stats, and come to the same conclusion. Particularly in an era where stats are more important than winning.
Melo has scored more than 25,500 points in 16+ seasons. An average of 24 ppg. He's been an All-Star selection 12 times. He's been on an All-NBA team seven times. And as you've mentioned, the gold medals. On that alone, his statistical qualifications put him by far and away higher than a ton of people already in the BB HOF.
People forget that just because Carmelo has never won a championship, it doesn't mean that should keep him from the Hall. Patrick Ewing, Charles Barkley, Karl Malone, John Stockton -- all first to come to my mind. All of them, HOFers. And if you look at stats...he's actually on par with all of them.
The difference is, Melo played in a bridge era from those guys, to this new system of no mid-range shots that started five years ago. Melo is a relic in this era. Hopefully, he caps off his career this season with a productive run (losing to the Wolves, of course), and calls it a career. But he's a sure-fire Hall of Famer, and people who don't think so, need to go look at his stats in comparison to others from his era.