Much of the issue here is that the Libyan situation doesn't have a heck of a lot of precedent. It's based on a U.N. resolution that aims to intervene in a sovereign nation to prevent the wholesale loss of lives among a civilian population. You can point to the NATO intervention in Kosovo in 1999 and also the 1995 intervention in Bosnia. Both of these interventions followed massacre/ethnic cleansing.
Thousands have already died in Libya as a result of the uprising. And we know what can happen when intervention fails or is passed over:
Rwandan genocide - 800,000 people dead.
This kind of intervention is going to have wildcards. You can't plan as though it's an invasion with the intention of occupation. That's not what the goal is in Libya. The goal is to stop a dictator from killing his own people.
I think it's a bit early to be criticizing leadership. A major part of evaluating leadership is measuring results, isn't it?