At the time, I just thought it was completely unrealistic the Confederacy could have achieved victory. I could accept undead gunslingers, mad scientists with flame throwers, Baptist preachers performing miracles, and even Buffalo Soldiers using steam powered jetpacks, but I could not accept not being crushed by the Union. I had a similar problem with Shadowrun. Native Americans make up about 2% of the population. I don't care if they've got magic, I don't buy them beating the US government, or at the very least, having that victory last.