Eric, I think you for one won't like the answer:
Wait, why should I dislike the answer any more than most posters here? I think we all realize that small ball is unlikely to succeed in the playoffs, but we're resigned to D'Antoni's commitment to it. At this point, there's not much more to be said.
I do think it's telling, however, that almost all coaches (not just D'Antoni) try to establish their style or "system" irrespective of the talents of their roster. Doesn't that seem stupid? I would think that a smart coach would assess what the players on his squad can do, then come up with the system that best utilizes those talents. But it seems that almost no one does that, and certainly the "top" coaches aren't exceptions.
About the only top coach I can think of who adjusts his system to his players is George Karl, and even he doesn't do it much. Mike Dunleavy, maybe. But with everyone else, the approach is "Here's what I want to do, I hope that works for you guys." Especially given that most coaches last in their jobs for only a few years, that seems a really counterproductive way to try to build a team.