LOL - I have not offered "interpretations", I have offered Lincoln's own words to explain Lincoln's own position. The record is there for all to view, and does not require "interpretations", which are the tools of apologists and revisionist fantasy makers like Jaffa and his deranged ilk. They predicate most of their "interpretations" on the belief that Lincoln never meant what he said or wrote, and that it really meant something else. As Lincoln himself once said, "I fear explanations explanatory of things explained". That's what the cultists do, they offer explanations explanatory of things explained. Strange how it never occurs to them that maybe Lincoln meant what he wrote and said. Instead, they insist that he was some sort of pathological liar incapable of writing or speaking what he really meant. Study history, not "historians".
We'll never really know if President Lincoln had made his proposal as a way of getting the idea of black sufferage started, with expanded sufferage to follow, or whether he really meant for it to be restricted to only some blacks. After all it was hardly universal in the Northern states in 1865, and perhaps President Lincoln saw Louisiana as the place to start. He must have thought that Governor Halm might be open to the idea, perhaps since of the confederate states Louisiana had the third largest percentage of free blacks prior to the war. But that is speculation. Instead he was assassinated and black sufferage for all was severely restricted by the southern state governments for another 100 years.