I'm not so sure about this. The offered "retreat" missions look more or less the same and are equally payed compared to any other ordinary cargo or data delivery mission.As others have said it sounds like the retreating faction becomes a 'hot' endpoint for missions
It's less the faction offering retreat missions, but the rather the numbers of missions from factions in neighbouring systems to deliver to them which from my experience does go up in the same way they do when a faction is in boom or outbreak and everybody in the neighbourhood with relevant trades to them starts offering missions to them. With those now rising their BGS and being first on the list for the player getting there they get some traction, and not much is needed as they only need more than 1 other faction in system to start to riseI'm not so sure about this. The offered "retreat" missions look more or less the same and are equally payed compared to any other ordinary cargo or data delivery mission.
I don't think there's any intrinsic pressure - I've got plenty of low-traffic examples where the retreating faction just hangs around on 1.0-1.5% for the entire period then leaves - but the mission effects are very plausible, and positive influence effects are slightly more effective at lower influence levels anyway.From that I concluded that its either an endpoint of missions, missions offered themselves (which themselves are illogical- the mission blurb says we need to retreat, do xyz that adds influence to keep you in the system) or the BGS has a mechanism that adds upward pressure when INF is rock bottom thats causing this.
Long-term, I think you can approximate this by how many (non-native?) factions are still in the systems, certainly for regional trends.As an aside (it would be fiendishly complex), I wonder if there could ever be a map of areas that are hard to retreat from due to the configuration of systems in relation to the BGS and how it calculates things?
I did testing in a very isolated system by shooting a sec NPC once that cycle, the next killing a sec NPC. From that I worked out it was roughly 1/4 influence in a 10k system.Interesting!