There's a lot of issues about Lincoln and, historically speaking, I would rank him far from the second best. From what I recall of history, he probably was in on the whole plot that incited the southern states to secede in the first place. Also, the emancipation proclamation did nothing because the southern states, the Confederacy, as it was a recognized and independent nation. Interestingly, the proclamation specifically only 'freed' slaves in the states that were in 'rebellion' against the federal government. It said nothing about northern states or slaves within them.

I will at least given him credit for one thing. He wanted to buck the plan and make way for the states to rejoin the US with minimal difficulty and some other things that the cabal didn't want. He was assassinated shortly after.