The best thing about a Frémont Presidency is that it would have kept James Buchanan out of the Whitehouse. Other than that, Frémont was a hard core abolitionist who happened to be from the South. His opposition to Lincoln centered upon his belief that Lincoln was not willing to use his power to accelerate the abolitionist cause.
I suppose. But the American people really did not support the abolitionist cause in 1856 or 1860.