Honestly, I like it. Regardless of who is the "better" player, I like Bass coming off the bench, as a more explosive player, and Sully as more of a facilitator with the stars in the starting lineup.
Sully is at his best setting screens, moving the ball, and getting position for rebounds, which is what they need with the starters. Bass is at his best jumping around, and hitting jumpers.
I would love to see what Bass and Green can do in a pick and roll game.
Even last year, I think most people agreed that Bass was ideally a 6th man, who was forced into the starting lineup. This might allow him to return to his ideal role.