Definitely a consideration, but James has had two very good years in a row. He just got more minutes this season, but his per 48 minute stats from last season weren't that far off from what he produced this year. So unless it was a two-year contract push I'm not as concerned about him.
If we had a decent backup point guard, Mike wouldnt be so tired by the playoffs. Get a good backup point gaurd and you get a fierce mike bibby in the regular season and in the playoffs.