DF only dungeons does make sense to me. Give players one last chance to get all the expansion portals before they disappear for at least 2 years.
It's a shame there isn't more, but I suppose just like in SL, it's better than the nothing baseline.
I am curious about the cosmetics vendor though. I suppose it's likely just to let you buy the cosmetics you can't normally equip on that character, but its intriguing regardless. Maybe there is something interesting on it.