I wish I could find the old Cracked article where people wrote in their dream games, they had a sort of VR Wizard duel idea that would be great with VR and tracking hardware. I've seen Ark played and can't say it "speaks" to me, but the open world idea whether Far Cry or Fall Out should definitely have some potential with VR. Wasteland with train rides and stealth break ins would be a blast, Thief with a BioShock Infinity sky-hook system type dealio going on depending on your character. I remember listening to The Bards Tale 2 songs on youtube or soundcloud or someplace, a humorful game where you rest and recharge at the inn while being mocked by the house band could be fun, and if they've already updated their universe then they probably have assets and ideas left over.