At first i was like, hmm another Paper Please game. Maybe the 9th or the 10th i played in this jam. But after playing a bit, i feel this has a charm.
First, the world building. It kinda want to establish a lore about this world, politics, society and things. But of course the short jam time prevent that. I think world building the most important thing of the this kind of game. I mean, very few players can do in the game and most of the time is reading stuff. If the game does not provide a good material to read, then the game is not good.
Second, the paper checking mechanism is the second most important of the game. maybe you can make an high fantasy paper ID, instead of modern ID card.
Third, game economy and progression. Add upgrade stuff like spell or guards to give a feel of progression.
This is a good submission in this jam. People maybe skip this because of the error in the browser version. But if you can, download it.