As far as future merchandise goes, we need to wait for more features to come out, then we the players can play the game and slowly the community will recognize certain things as representative of Oort.
From there the devs will have something to sell because it's iconic at that point.
Right now, in this current stage of development, most people only see it as a Minecraft clone.
We speak of the Titans like an unseen prophecy because they don't exist yet, and portals/warps lead us to more minecraft worlds.
But when they finally come out with races that'll be the first step in selling physical products, like a plush toy or a poster of something that exists.