Instead of the portal modifiers bring back Pathfinder.
Instead of running the same activity over and over, give us passive ways to progress.
If you want, include special nodes that require unique activities that require additional challenges but reward additional gear.
If a player completes all the nodes before resetting they could receive additional rewards as well.
This gives players a better, more varied and relaxed way to progress. It also rewards those who want a challenge with more gear and faster progression.
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At the very least, bring it back for Gambit. Current game structure actively disincentives anyone from playing it and I think that's a really crappy thing to do.