They could always add a set of quested gear like the L50 cyber and mystery sets
And/or bring back daily quests to craft/upgrade endgame sets
Could even add quests for sets to old campaigns, I know nuris through bsm are a big wall to campaign progression if you are actually the recommended levels, mainly due to rarely having any teammates let alone a full party, but the drop rates on decent gear is pretty bad for most of the areas