Solid take on Papers Please. Perhaps some light interrogation elements (asking the agent to unzip their top to show a chest scar, or something) to add some spice and variety to the gameplay would be warranted. Also a fan of nudity in bondage, personally, so perhaps outright stripping a spy every so often, maybe on suspicion of sneaking in weapons or something,
Either way, would love to see this idea expanded on, very solid base to work with here.