Suns point guard Goran Dragic is slated to get 18-plus minutes per game this season, allowing Steve Nash to rest.
Nash has said he was run down at the end of last season and the team would like to limit his minutes, as well as keep him around 70 games played. Nash has admitted that he's not sure if the plan will pan out, but we'll have to see if the Suns can pull it off.
I think that it's reasonable for Dragic to play 18-20 minutes per game as a backup - even though we've seen Barbosa step in for Nash, if Dragic can keep up the pace then there's no reason why he can't play those sort of minutes. Initially does he play those sort of minutes? Porter might just throw him in the deep end and see if he adapts.
As far as Nash and the 70 games played scenario, I can't see that happening. The West is going to be tight, and it's more than likely that Nash will be required on the floor in the final 10-12 games of the season as the Suns fight it out for a decent playoff spot.