If any team has a chance to come close this upcoming season, it's the Spurs. They have covered all of their weaknesses. They have depth at every position. And, they have added TWO crunch time players. I have always been a fan of Nick Van Exel. And, he is straight ice-cold under pressure. I wouldn't be surprised if NVE was in the game in the closing minutes of the fourth quarter in close games against good teams.
If the Spurs have a realistic shot at 72+ wins however, HEALTH is always an issue. Even with their depth, losing a key component against good teams will make it tough to sustain the type of caliber play throughout an 82 game grind. And, there must be no let-ups even against the weaker teams in the league.
But, I wouldn't count against the Spurs getting 70+ games. Your team is THAT good.