Hey there, just gave the game a play and really enjoyed it. Only got 2 of the endings, gonna go back for the other two later. Would love to see the concept expanded upon, but as someone who hasn't actually played the original Papers Please, I'm not really sure what else could be done.
Aside from what other people have mentioned regarding bugs, I encountered a couple of times where someone's birthdate just had a 0 in the day column and was still considered a valid birthdate (penalty for denying, none for approving). Also it seems like you don't get a penalty regardless of whether you approve or deny Ina, but that might be intentional.
Anyway, good game, really enjoyed it. :)