There are a few airship amenities that kind of make me scratch my head,
One in particular is the altar of epic rituals. For one, you can't really use it without the vendor there to exchange your tokens etc.. for the augment crystals. So you have to run all the way to the vendor in the 12, who is standing right next to the epic altar, then run all the way back to your ship...huh?
Seems like very bad design. The epic altar should include the epic vendor next to it, so that when you place it on your ship it's actually useable. Just my thoughts on it.