Hello avonmora!
Have you ever wondered...when is it night and day in the game? Sure for you it could be 3:00:00 GMT or right at reset, but what for the npcs and fleets?
I propose a night-day system in PG.
Reset being 12:00 in the middle afternoon in terms of comparison and GMT 12:00:00 being midnight.
The times of day affect general mechanics in a slight fashion.
In the day time, skirmish percentage doesnt change. Fleets remain at normal speeds, accuracy of cannons and evade ration is at standard ratio, and workers remain effecient.
In the midnight time, your ships are 12% less accurate and evade 12% more shots. Skirmish chance is reduced by 15% and patrolling to find npcs becomes more difficult to find merchant and treasure fleets.
This is just a rough sketch but any suggestions for something like this or maybe needs more discussion?