Oh, shit, I didn't even think about the gallery..
Viewing post in The Rhythm is Returning comments
Yes, I would think the majority of us consider the gallery an important part of the novel/game. I haven't done any coding for almost a decade, but I think you could perhaps internally link the gallery between the original and any additional arcs, although that would require keeping all previous content installed. For myself that wouldn't present a storage space problem, but I suppose there are others for whom it might.