No amount of adjustments, or a different approach to coaching, or a different coach, altogether, is going to cover up:
The worst big man rotation in the league (not just playoff teams, but the entire league)
Dray missing two months with a fukked back, him coming back and being clearly limited and all the wear and tear he's had over the years
Getting Wiggins to be consistently productive and engaged (no coach has succeeded before him going to GS, and no coach will when he leaves)
Klay missing out on two years of play and expecting him to just return to his normal self midway through the season without any bumps in the road
Integrating TWO rookies on a 'contending' team (no other contender is even remotely forced to do the same thing)
The numerous injuries that have needed to be managed throughout the season where they haven't even played ONE game will a full rotation.