Given that there are players who do not leave or who go back to NPC corporations and essentially shut themselves away from interacting with other players in the game by doing so I suggest a new status choice for corporations:
Permanent Belligerent Status, hereafter “PBS”
PBS choice/option should be a role available to directors only to turn on/off with 24 hour notice for the corporation.
Cost: 1 Billion ISK to activate. 0 ISK to deactivate.
Effects of PBS beginning 24 hours after activation:
The corporation selecting to activate PBS is, until deactivated voluntarily, is permanently retained in the belligerent status.
The PBS corporation is, upon activation, legally at war with all NPC corps except for concord and faction police. All NPC corporation pilots, non-player and players with over 14 days in the game may be engaged as war targets by the PBS corporation. PBS corporation players will appear as war targets to all NPC corporation player pilots. Harassing new players in starter systems should remain off limits.
All of the PBS corporation pilots, though not their assets like structures, are in a continual state of being flagged as “suspect” (flashy yellow) and may engaged as such by any player in the game.
Rules for aggression and normal wardecs apply normally. In other words player owned corporation pilots outside of the the PBS choice are still relatively protected by concord in hi-sec unless engaged in a wardec etc.
Players who leave any corporation during a time when their corporation is part of a active wardec are tagged as NPC corporation players for the following 7 days even if they join another player corporation. This is meant to prevent abuse of the dissolve/reform mechanic and/or penalize them for abandoning their corpmates under pressure etc.