I'm not quite sure if "horizontal progression" is what I'm looking for, but it'd be nice to have gear to chase that isn't gated behind weekly tome caps or weekly raid lockouts. Even if the combatant was RNG rather than a lockout, it at least would give players with more time on their hands something to do. Something to work towards with their oodles of free time when the raiding is done and they've already gotten their Alex drops and hit Eso cap.