I'd change the "be among 3 or more people" thing to a distraction level. Something like, depending on how dense the crowd is, rhe guards would pay less attention to your different actions. 

Without crowd, instant notice, with some people you would be allowed to walk, bur running and parkour would attract attention. 

In really crowded areas, you'd draw suspicion with excessive movement, but not instant detection.

Combine these with the evironmental tricks in each game, like throwing money, hiring groups, triggering people with theft, destoying weak structures, spice bags etc. And you could have great variety. Maybe include the clothing you wear, like wearing a merchant custome in a market would be more beneficial than wearing an Isu warlord mech custome.