What's the endgame?

You completed all your quests, your decks, your projects (expedition etc.), and you have all your favorite weapons. Maybe you're also a little crazy and learned all the blueprints. What's next?

I'm a few blueprints away but I'm almost there. I've been running into lobbies and trying to help out other raiders (justice raider style), but I might be getting to the end of any "purpose". PvP for the sake of it isn't all that fun for me either. Achievement hunting? Is that next?