RC Buford is such a terrific GM. Traded a much beloved George Hill, supposedly one of Pop's favorite players, for Leonard's draft rights. Looks like it's paying off. Doubtful they'd trade him.
Agreed. Though I do think the coaching staff deserves a large amount of credit too; Leonard was a terrible shooter coming out of college and has turned into a good one. The Spurs have gotten a lot of good players late in the draft, but I don't think all of these guys' careers would turn out the same way if were on other teams.
It's important to remember this -- coming out of college Leonard had, essentially, no three point shot at all. He also barely played his rookie year, and was essentially tasked with making shots from deep and playing solid wing defense in order to earn playing time on a 50+ win team. It didn't help that the Spurs shot doctor was working him day in and day out, either.
If he'd been signed to, say, the Cavs, he might as well be Alonzo Gee.
This is a ridiculous statement. Let's give Leonard some credit here. The kid works hard on both ends of the court, one of the better rebounder and defender for his position, and has a great feel for the game. The Spurs coaching staff is great but lets not make them seem like God. We can cut the crap about the "Spurs system" or whatever. Leonard is a talented player and he probably would have been successful anywhere. Let me see you put Alonzo Gee on the Spurs and have him outplay Lebron two games in a row. Yeah... don't think so.
Judging from your logic, who knows if Parker or Ginobli would still be considered HOF players had they been on another team. Role players at best, I'm sure. 
No one's saying Leonard isn't talented; of course he is. What we're saying is that there are tons of talented guys in the NBA, and a lot of times what separates the ones who pan out from the ones who don't is the environment they come into. From 2007-2011 the Spurs highest picks were 28th, 26th, 37th, 20th, and 29th. The guys they took: Tiago Splitter, George Hill, DeJuan Blair, James Anderson, and Cory Joseph. All of those guys are rotation players (thought not all are still with the Spurs); hitting on picks that late in the draft five years in a row is freaking astounding. And that's just recent picks, they also took Ian Mahinmi 28th, Beno Udrih 28th, Luis Scola 55th, Tony Parker 28th, and Manu Ginobili 57th. You say don't act like the Spurs coaching staff are God, but do you really think the Spurs scouting/personnel department has the foresight to distinguish between useful players and scrubs late in the draft every single time? That sounds pretty God-like to me. I'm not saying they aren't good at what they do or that the players they pick aren't talented; I just think that people attribute too much of players' careers to the players' talent/character and not enough to their environment.
And to be honest with you, I don't think it's a ridiculous assertion that Parker and Ginobili wouldn't be Hall of Famers in a different environment. They have talent, but they also joined a good organization and learned how to play winning basketball:
Player A: 20 years old, 6'2", 180 lb, 15.5 PPG, 5.3 APG, 2.6 RPG, .9 SPG, 46/34/76 FG/3P/FT%
Player B: 20 years old, 6'1", 169 lb, 15.5 PPG, 5.5 APG, 3.4 RPG, 1.3 SPG, 37/37/82 FG/3P/FT%
Player A is Tony Parker in 2002, in his second year. Player B is Brandon Jennings as a rookie in 2009. You don't think it's possible that if these guys switched places, their careers might have unfolded a little differently?
