Posted here early last year about how much I liked the Lakers approach, and, assuming the signings of Deng and Gordon, it looks good again this year for a different reason, along with some of the same ones 

Irregular rotations left confused roles, intersquad rivalries, morale issues, etc.  Knowing that being on the starting squad only insures PT if your squad performs creates a good dynamic for energetic starts to games.  And being on the bench as a squad that knows it's going in with the opportunity to stay in longer with good play also has a great dynamic. 

Best nights?  Both squads perform, the system works, Bulls win easily.  Worst nights?  Nothing works on those nights anyway.  Normal 50 or so games a year?  One of the squads has it in gear and gets the heavy minutes, and we are in position to win 30ish of 50 games because we had the hot unit on the floor longer, or at least didn't stagnate with a lineup that just didn't have it.

This approach keeps the emphasis on team success, not individual.  The key to better minutes is for your squad to play winning ball, period.  And the only thing keeping you on the bench longer is winning play by the other squad.  It's all about winning.  Like I said, it worked out great for LA until too many parts went down with injuries.  Kobe and LO were real cheerleaders when the 2nd unit went in, and the bench won a LOT of games for the Lakers.  The additional benefit of logging fewer minutes for Kobe while still winning didn't hurt either. 

The different reason this year is that we need to shop some of the players.  No way they can afford everyone if TT, Tabo, Noah etc all materialize in their roles.