Well, in the case of a lot of people on Excalibur we already have level 50 classes, the content wasn't too difficult for us to pass through. Some of us didn't even put in that much time.

In me and my friends case we rushed ACN to 50 (as we had everything else leveled), and we're still enjoying the game, we've just blazed a little too fast through it meaning we're stuck in a rut where we don't have much else to do.

Even people who joined on release are at the same stage of content fatigue as us, it's not necessarily a bad thing, gives us a time to do other things (if we want).

However the new content patches will keep us entertained, it'll taper off eventually and we'll have plenty to distract us.