I suggest you remove every single inactive faction, this way we can simplify the game and make it even more boring. Just because LWB didn't have many players or maybe none at all, it isn't a reason to remove it from the game. LWB was there for a reason and maybe someone wants to RP as an LWB in the near future, who knows... Just because it is inactive it doesn't need to be removed.
What if nobody else will play Liberty Navy? You will remove them too?
This sounds stupid. Leave factions in game, even if there are only NPC patrols, it gives immersion and feeling to the game.