Westphal has settled on the rotation but if you remember last year, he did the same thing.
The problem with Westphal is that he uses half the season playing musical chairs with starting line ups and rotations and after the all-star break settles on a rotation that many of us were calling from day 1. The problem with his approach is that team doesn't build chemistry, players are confused about their roles and that shows on the court. Westphal just can't help himself when he gets new players. He just loves to experiment which is fine in the pre-season games but when the real stuff starts, set a rotation and go from there.
If he is the coach next year, he will start doing the same thing, pee farting around with line ups and rotations trying to play will all the new toys he got during the summer (read new players) only to yet again confuse his team, frustrate players and fans with his inability to pick a rotation and stick to it. This team needs stability, repetition and time and I am not sure Westphal can provide that.