I think what most people are not realizing here is that N. Thanalan is more efficient until 55 dungeons (provided the area is busy). It's not a matter of being lazy, avoiding challenge, rushing, etc. It's just that in the current state there is no reason to be in the new areas unless you're hunting.

I don't particularly like Fates, but I used them to level my second class while doing dungeons and N. Thanalan is stupidly efficient right now. I'd love to do Fates in the new zones while queuing, but it's not worth it right now (I tried doing them in all zones except the last one). At the end of the day, N. Thanalan was quicker, which is a shame.

I love new dungeons and they're great for xp, but I'd love to do Fates as an alternative in new areas too.