Tim Duncan kinda fits in here. I think of the current crop of stars the three that jump out as obvious potential coaches to me would be LeBron, Chris Paul, and Rondo. Rondo is smart enough, but don't think he really wants it and likely better in broadcasting. The other two I would think would be more interested in an avenue to ownership.
Nash was in the periphery of the Warriors as an advisor and probably liked what he saw Kerr doing. The only thing I remember from that was he was quoted as saying something like 'they don't need me at all.'
That or maybe he invested it all in Blockbuster.
Speaking of Chris Paul, thinking about it a bit today it really was pretty unexpected and great how he was able to basically put an entire team on his shoulders and maximize the situation the trade put him in. When it happened I thought he was done, but he may have a few years left in a relatively good situation, even if I don't think they will be in legit title contention. Bad way to end a weird season but glad it's at least kind of looking up for him as he is a great dude.