maybe a bit cliché, but when a player reaches a high enough level (between 750 and 1,000 for example), they get access to a new mission that informs them of a new NPC race that seem hell bent on destroying/taking over the universe. This could include some of the concepts brought up in the past of npc controlled planets, new blockade NPCs (that could do more to a planet than reduce production) and would bring new modules that would be combat heavily-orientated.

This could bring out a new mission chain that explores the background of this new race, and how different alien alliances are uniting to stop them. These missions could give artefacts that help lead legions to a high level NPC boss (maybe similar toughness and rewards to a lvl6+ base).

New blockade NPCs for this race could slowly kill the planets population, doing more damage as they stand unopposed for too long, essentially preparing a invasion in addition to lowering production. Killing these blockades could reward players with "data fragments" or something similar, which legion members could use to locate the above mentioned boss. For this a new "Legion Recon" button could be added, where players who have disabled these NPCs could submit their fragments until enough are assembled to lead the members to a NPC. This could be a boss or elite level NPC.

Obviously this race would have common NPCs viewable to those who are high enough, and could all drop dark badges in addition to other rewards (if any, discuss) which in turn could be used to buy new and insanely powerful weapons and other modules.

sounds interesting, maybe lower the rank requirements a bit but either way +1

Do you play EVE - Was this post inspired by a certain part of EVE?.... Seems a bit like something I know of elsewhere ...

That's deffo Caldari storyline

people don't play EVE do they lol

nope, never played EVE, though i will confess that a few of the sci-fi things i like tend to eventually throw this sort of thing in, so maybe that was the inspiration