I think they're a perfect example of a whole being LESS than the sum of its parts.
I think coaching is certainly part of fixing that issue, but there are many others - players' skill sets complimenting each other's, the organization empowering the coach, the players checking their egos at the door and buying in, etc.
Quin is an exceptional coach but that roster/franchise seems to have some deeply rooted issues these days. I wouldn't touch that job with a 10 foot pole.