Let me specify; a portable Crafting Portal.
Once you discover one of the set crafting stations out in "the Wilderness", the portal would allow you to wayshrine/teleport your crafter to that crafting station. You haven't found one yet, you can't use the portal to get there.
I was making gear sets for guildmates and wondered whether there would be an easier way to move from Julianos to Magnus to Death's Wind to Hundings to Seducer... well, you get the idea. Crafting station only. It could even be tied to a certain level of crafting skill.