Hey, I'm a Total War guy and fan of Darthmod. I also happen to be a big history buff and am, coincidentally, just finishing up volume three of Shelby Foote's history. I loved Sid Meier's Gettysburg back in the day and even tried to play it again recently, but its UI is pretty bad by modern standards which was enough to put me off. I'm very happy to see another game that could replace it, thank you!
I'm not sure whether this question is for the History section or the general section, but since the history section is pretty empty I decided to post it here. My question is: What are the limits of the battle going to be? Are you going to stick to ONLY to the battle itself (that is, Gettysburg from July 1 to July 3) or will you include a broader aspect of the Gettysburg Campaign as well? Gettysburg itself is very interesting, but IMO it has limited historical what-if value without including action outside of that specific battlefield. In particular, Hanover prevented Stuart from linking up with Lee early on, which definitely had a major impact on the entire course of the battle. In addition, the simple defeat of Lee's army at Gettysburg was important, but not as important as the opportunity it gave Meade to destroy the Army of Northern Virginia when it became trapped at Williamsport. A second victory there would have dramatically altered the course of the entire war in a way that Gettysburg did not. I have a feeling that these additional scenarios are probably outside the scope of your game due to the fact that they do not involve the Gettysburg battlefield itself (and would thus require independent maps), but if it's possible I'd like to encourage you to add in some way to include at least some kind of what-if option to the game, particularly when it comes to Hanover. Maybe some kind of toggle to determine the result of Hanover; Confederate victory means that Stuart starts the battle with the Army of Northern Virginia, while a Union victory keeps the setup historically accurate.
Regardless, many thanks for making this game; I very much look forward to it!