You know that you can both start Beasley and stagger his minutes with Harden so that he's on the bench the next time Harden comes on. This way we have another person to score at the beginning of games.
If anything I would use Beasley the way the Clippers use Reddick. Give him the first 2 or 3 shots of the game to get him going, then switch to Harden.