Looks like a pretty decent list.
No one has really ever questioned Baron Davis' talent. It's his love for fast food and cake that has led to so many injuries that people have questioned. Talent wise, I have no problem with him being where he's at. But, is this the year he stays fit and healthy enough to be that player night in and night out and justify people believing him to be that good all the time?
As for Steve Nash, while he's always been criticized for his lack of defense, I will say a few things. Last year, watching the Suns, Steve Nash's poor defense is not due to a lack of trying. I see him try to play defense. He's just not very good at it. And, while it is a fair criticism, Steve Nash's liabilities on defense are not really a detriment to his team's chances to win on any given night. What he gives up in defense, he generally makes up for it on offense, controlling tempo, getting his teammates a lot of open and easy looks, and making the Suns really effective overall. Generally, when the Suns lose, it's not because of Steve Nash's defense. On that team, in that system, those liabilities don't matter as much. Like I said, it's a fair criticism. But, he does more to help his team win than those defensive problems do to make his team lose.
Tony Parker isn't exactly a defensive stalwart either, but most people (and not just Spurs fans) would have no problem where he's ranked.