The solution is CREATING WORTHY AND FUNNY CONTENT also for casual/carebear/traders/crafters players outside of safe zones, not taking away the trade and craft in the safe zones hoping that people will just come out to be killed.
Instead of taking away shipyard from capitals, just enchance the rate of purple/golden ship crafted in ports that are far away from capital region.
Instead of obliging people to take missions/attack fleet out of the safe zones, make those mission/fleets drop more rare books, notes, upgrades, materials!
The more you will make hard the life of the average joe, the more he will just quit the game ... and .... the less you will find OS PVP.
It happened with every single "hardcore" patch we had in this game, including the last one!
And yet it seems that someone does not understand that using CARROT with the casual players is the correct solution, while just beating them every patch with the STICK of the "hardcore game" is just creating an empty server.