Reminds me of trying to figure out how to get the Magenta Crystal, can't wati until this gets figured out, really intriguing!
My thoughts: It probably will NOT be some random emote, i'm thinking a specific item, hence the 'only what you take with you', and the item will probably be something that is just staring us in the face right now. The oldschool remark makes me think this is an homage to a similar scenario in another game, so anyone remember another MMO/game that has a similar secret/easter egg?