Interesting thread... Going off only what I have read/seen, I do believe that we became "this" largely because of Luke. DH was/is very JC like in that he can get players to run through walls. He creates a culture of toughness, winning, defense, accountability etc. But he (like JC) were never known as innovative offensive coaches. They both relied on having players make plays. That had run its course here by year 3-4 with DH. Our players, while good, were not guys like Ray, Rip, Caron, Donyell who could just take the ball and make plays. DH, and I think largely through Luke, finally realized this and figured out we need a system that allows the players we do have to flourish. The Euro style doesn't simply rely on great individual talent. So it allows Hawkins to be a shooter, creates spacing to get Adama get easy deep looks, Jackson to be a connector, Spencer, Newton, and Karaban (and more) to flourish without great athleticism. It has prioritized IQ, shooting, and individual skill.
I think you take Luke's mind, couple it with DH's drive and intensity, Kimani's recruiting ability, and Moore's experience and fundamental development to have a perfect coaching staff. I personally do not believe that we become "this" monster of a squad without that mix. And, to take it a step further, I do not think we win Nattys with DH alone or if Luke was here alone. Just my opinion and based on what I see, read, and hypothesize.