This is a history/Political question:
Okay, no admitely he ended up doing some important things, but thats of little importance to me. Forget the End result of his presidency, lets focus on the man and his actions.
Motivation:
It seems evedent that throughout his presidency and even before it his main goal was strenghtening national government. I wander if he even really cared about slavery. He allowed slave states in the Union, and gettysburg adress, freeing slaves, only applied to the southern states that had left the unioin. It was more of an act of cripling an enemy than anything else, as until the war was finished it meant nothing.
Actions:
Many hate Bush because of a certain disregard for the Bill of Rights(*patriot act*). If Bush is guilty of this, then Lincoln was much worse. He basically put the Country under marshall law. This to me is not a very good act. In the end he had made national gov much stronger than it had been intended, and the founding fathers may have turned in their grave...
So,
Is suspending the Constitution in times of War acceptable? If the government is based of the Constitution, shouldnt it be adequate to run the country, no matter the times. If not an admenment is needed.