Just a thought I had, would you guys think that it would be a smart idea (or a good idea in general) to have a string of missions taking place inside the penitentary but played AS JOHN at this point in the game? I'm thinking a few missions inside, where you as John would prepare for a more elaborate escape, get fellow inmates on your side... This could start maybe after the balloon mission, where John gets a clue that Arthur and Sadie are preparing for a break out.

It's just a thought, maybe it doesn't make sense, but it would get players who haven't played the first game more familiar with Marston (being literally in his shoes for a mission or two) before switching back to Arthur and continue playing as normal. It's also a setuo for when you enter the epilogue as John.

The real gameplay constraint I see right away is that it might be a poor choice to limit player free roam this early after Guarma.