I remember thinking, "Well that's interesting" when the trade first went down. Now it's considered one of the better trades in recent memory.
SAS won for a number a reasons. First, Leonard is the better player. Second, Hill, in my opinion, is a little overpaid, while Leonard is still on his rookie deal for another three or four years. Third, Leonard is a better fit. Hill is solid, and I like him a lot, but to beat MIA, you need a PG that can take over and penetrate. Hill isn't that kind of PG. Leonard give SAS that wing defender that can cover Durant, that can cover LeBron, that can cover Melo. You need that kind of guy to win.