I think the Ram stone should come with The Faceless One, but it is definately a great accessory which we should get. I'd love to get as many artifacts from Eternia as possible. I love the Grayskull key from Scare Glow. Little accessories make me happy in a nerdy way. (I'm a recovering avid Star Wars collector, gone casual now. Other SW collectors will understand the attraction of blue-milk cartons, cups, medals, hydrospanners, and, very soon, ice-cream makers.)
I would love to see the 200X version come with the Shard of Darkness, as the Staction did.