So ok, internally we started already brainstorming for "InvisibilityTypes". (@ConjurerDragon Sorry that I still call the feature that way - but it makes things clearer for us.) Things that would be possible: (Once we succeed teaching it to AI.) Reactivating "Camouflage" of Rangers to be hidden in Forests (but Native Mercenaries and others being able to spot them) Storms completely hiding all Ships - but also taking away their sight completely Fog - on Terrains with no other Features - completely hiding all "Land Units on Foot" - but also taking away their sight completely Thieves and Spies - being able to sneak into enemy towns (but Town Guards having a change to catch them) ... All that is needed is a capable modder having time to implement it. So if one of you guys is interested, let us know. Have fun brainstorming.