While I'm not a D'Antoni fan, I have to agree with you that if the Lakers do decide to fire D'Antoni that they need to have a replacement in mind or at hand. So, the first thing the Lakers need to do is decide who is going to coach going forward. FA's, trades, re-signings then make sense.
If the Lakers keep the current coaching staff, I hope someone in the FO encourages D'Antoni to stress Defense a hell of a lot more than what we saw. I get the fact that a host of guys were hurt a lot this season, but the emphasis still needs to be on playing more Defense. This team has, or should have, guys who can score, but you can't give up 105 plus points a game and expect to compete for an NBA title.

Did anyone else see where Short Buss said that if the Lakers aren't back in contention in 3-4 years, he will step down? Sounds like a win/win to me.