CSA Scuttlebutt

In response to my comments about CSA: The Confederate States of America, I've heard through the grapevine that there's a theory the Confederate army would've been far more aggressive than they were if they'd just had the chance. In the film, writer/director Kevin Willmott portrays the winning Confederates as an army on the offensive, invading and conquering the rest of the continental United States after capturing Washington, D.C., and forcing the Lincoln administration to fall and Lincoln himself to flee. Although I understand why Willmott would do that for the sake of the film, I thought that the scenario was unlikely and didn't really follow from the facts as we know them. Willmott has said, though, that he was inspired by a section of the real Ken Burns documentary that described Confederate plans for a "tropical empire" after they achieved independence. Although I know some in the Confederate leadership fled south of the Rio Grande after the war, and a handful even resettled in Brazil, where their descendants continue to live today, I've never heard much about plans to expand the Confederate nation itself once it became an independent country. If anybody knows about such plans or intentions or can offer informed speculation about how a successful CSA might have interacted with the rest of the continental U.S., please offer your comments.