Let's ask ourselves an honest question: do we REALLY care what happens during the regular season?
Personally, I don't. This is the NBA. We can watch every game and over-analyze every timeout and every adjustment, but realistically all the Knicks really have to do is breathe and they're one of the best 8 teams in the Eastern Conference in the regular season. If you look at a guy like Phil Jackson, who's the best coach in NBA history, you'll see games where his team didn't play with any effort, times where it didn't seem like he called timeout or made adjustments, and you'd probably hate him if he didn't have the number of rings that he does. I'm not saying D'Antoni's as good a coach as Phil Jackson, but D'Antoni's a good coach with a talented roster for basically the first time in his NYK tenure and he should at least get the full season to prove whether or not the team can perform up to snuff with him as the coach.
Calling for D'Antoni's head this early in the season doesn't make any sense. You're not going to drastically change anything simply because they're isn't time for a new coach to come in and implement a new system.
The point I'm trying to make is this. D'Antoni needs to perform up to the expectation, which is that the Knicks win a first round playoff series and at least play a competitive series in the second round. The roster's not quite at the point where it can compete for a banner but the core pieces are in place and it's close (I think it's a year away, honestly). If the team doesn't get there, D'Antoni shouldn't get a contract extension, but it's a big-picture call. It's not a call that any team should make after 12 games.