The Luxon are a nomadic people in Guild Wars who use giant turtles. When I first saw one, I immediately wanted to tame it as a pet. Then I noticed that it was being used as a beast of burden. And Dungeon Siege thought it was so fancy with its pack mules. Guild Wars 2 needs this: no bags, packs, etc., just a giant turtle that follows you around and stores your stuff.
Then you enter the first Luxon town, and the buildings are on even bigger tortoises. They have ambulatory, turtle-based homes. Guild Wars 2 needs this: player housing should include a tortoise option. The Asura can use box turtles.