In Plane of Valor, I keep seeing on bard track some named mobs that come from PoTranquility. If I track their location down, they're not there, I think they're underground.
One is: Jurmak the Undertow
http://thehiddenforest.dyndns.org/npc.php?id=208102
(Plane of Tranquility version: http://thehiddenforest.dyndns.org/npc.php?id=203379)
I think they're itemized for Valor, however if you compare their locations, they're the same in the Tranquility and Valor versions, so maybe they just need to have their locations fixed.
Another: Sahrya the Dawnbreeze
http://thehiddenforest.dyndns.org/npc.php?id=203383
http://thehiddenforest.dyndns.org/npc.php?id=208106