Almost nobody can run raytracing but everyone can experience new content. I'd rather they focus on that instead of a minor graphical improvement for the 500 players who can use raytracing. Maybe by late 6.x but not yet. They are behind schedule, and something like this would be super low on priority. WoW is losing their playerbase very quick and have been for some time. FF14 is only gaining so there's no need for cheap marketing gimmicks. Yoshi P mentioned something about deciding between overhauling the graphics engine or working on a new MMORPG by 6.0 so we'll see by then what he says.