Meltys Quest.. isn't anything like this, though. That game had a gallery because all the scenes were.. just that, scenes.
Karryn's Prison can't have a straight up gallery because there are no scenes. All of the action is part of the combat itself, and even the defeats are their own combats.
Even if they were to add, say, a room where you can pick the enemies or the scenarios, it's still not that simple because how Karryn reacts isn't just straight up "Vegeta, what does the scouter say is her slut level?" but based on like a dozen different factors.