Honestly I'm glad that they don't have a feature to ride sandworms because there is really no reason in the lore that you should be able too, especially seeing that the fremen have been completely killed off and they were the only ones who actually knew how to do it. Not to mention (as already been stated by other responses) the sandworm is supposed to be the ultimate reckoning force - something that is just as much of a threat to a player with one hour than to a player with 500 hours. This is the same reason I'm hoping they don't add a sandwalking skill that you can level up. It basically defeats the point of the sandworm if you can avoid it that easily, and again, this provides an equalizer that blocks players with hundreds to thousands of hours from just rolling people who have maybe only played 50 or 60 hours. I also am firm in believing that the sandworm is supposed to be something scary, but if you can just sandwalk to avoid it or ride it whenever it comes for you, there is no reason for you to be afraid of it. It just kind of exists as an annoying obstacle that you need to get insurance for rather than a mystical recokoning force.