Recirculating ball steering also probably won't allow for new fangled features like active lane-keep assist, collision avoidance steering, self-parking, etc. (Which is probably not missed anyways by the 4x4 crowd, including the Ineos Grenadier ideology.) Mercedes switched their G-Class away from recirculating ball steering just a few years ago and I bet, based on MSRP, that their primary use now is much less 4x4 and much more embracing of complex computerized features for urban crawling and highway touring.