No new content available - done everything I wanted / was aiming for. Oh wait that's what's happening right now !!
Aaaaand that's also why I'm not subscribed any more, will be when WoD comes though...since you know : new content
As for something that would make me think "damn I'll never play this game ever again" I really have no idea, I'm pretty open minded as long as things keep me entertaining. The biggest deal breaker would just be me losing interest.