Similar to the “historic weather as second timeline” thread I suggest to also implement historic “live” traffic.
I believe this would make a lot of sense. Many airports have very little to no traffic in the late evening / night. As this is the time I (and probalby many others) mostly fly, I hardly ever see much traffic.
I suggest to “save” the data for live traffic in a snapshot for a reasonable time - say 24 hrs - and when setting a time in the sim, the sim should show the traffic as it was at that time. I think it would be enough to save data like airline, type, route, actual times of departure and arrival in a simple table so I guess it would not be too much data.
This could be made optional in the menu “AI-live traffic according to sim-time” for people who really want to have “live” live traffic.