I think they've got the map done. Might be a little early for that yet... though this in itself is speculation.
You know, while I hope Paradox doesn't shy away from the bad side of slavery--er, that it existed, I suppose--I hope some of the positive efforts against it are put into high relief. Specifically, the British went on something very close to a holy crusade to do away with it.
For example, the Royal Navy blockaded Constantinople and (I believe) threatened its shelling if the woefully lax Ottoman government didn't play ball on the crackdown on slavery in the Arab territories (to be fair to the Turks, the move was actually applauded in some circles, mainly amongst those that wanted the sharia law enforced, though naturally the British resort to threat was not appreciated).
Also, one of the primary--if not the main--reason the British gave no real support to the Confederacy, despite their lingering enmity with the U.S. and general and reasonable loathing of its free existence, was in the end the Union's anti-slavery war aims. The Emancipation Proclamation made such a position of support for the far greater of two evils, however much realpolitik sense it may have made at the time, totally untenable.
Hopefully British efforts to change other country's domestic policies based on ideological imperatives will be modeled; such a system, of course, would hardly be useful only for them.
EDIT:
Toejam Football: It wasnt a MAJOR factor of the American Civil War, the war didnt start to abolish slavery like so many people think.
Not as such, no, it was started because the Confederate states (including my own, gosh I'm so proud we were the first to secede) felt that the Constitution provided for states rights and, ultimately, severances of ties to the Union if they saw fit. The United States government, logically, felt quite different on this issue. But the war was not fought over the philosophical ramifications of these divergent views. It was fought because increasing federal control--a federal control directed by the more populous, anti-slavery North--would have eventually led to the abrogation of certain assurances the South felt to be their natural rights. Therefore, no, the war was fought over slavery, but, to be more specific, the right of states within the federal union to decide their own laws regarding slavery and everything else. Slavery was certainly the prominent issue the states of the South felt they wanted to decide on their own.
