Incase anyone is wondering what the evolved skills are, here's the list. Hunter has 3 levels for a 15%/30%/45% activation chance. Sensory block has 3 levels, though I only saw that level 1 is 7s duration 80 sec cooldown. The other 4 skills only have a single level.
Mass arrest's translation is a bit poor so to be clear it makes it so clicking on a person to start an arrest automatically starts the arrest for everyone who is ready to be arrested. It doesn't trigger on finishing an arrest or anything like that.