Seems like a good idea. It would probably increase the amount of times people replay the game, since they’re probably going to want to see the stuff they missed out on.
Edit: Finally got around to playing Chapter 3 (the one in Tunisia) and I have some feedback. There wasn’t that much meaningful interaction with any of the characters in this chapter. That’s fine, I know this isn’t a character focused game, but there was so little going on in the beginning of the chapter, it felt kind of empty. The scenes where something did happen (finding the crashed German plane and the encounter with the Italians) felt kind of wooden? I think the encounter with the Germans was supposed to be impactful, but it just kind of fell flat for me, since I didn’t care for any of those characters and there was no real emotional payoff to the interaction.
I’m also not sure if the French sargeant was supposed to be a sympathetic character. I don’t think he was, but even still, he kind of reads like someone with no redeeming qualities and that makes him kind of uninteresting imo. I think if we had more time to interact with him, or if we got to see him show some sort of depth it would make him more interesting.
Finally, I’d suggest adding something to the path where you don’t check out the crashed plane in Chapter 3. This could just be a bug, but I thought it was kind of weird that the chapter just ended for you if you chose to ignore the plane and continue on your way.