The simplest solution they missed: Criterion Dungeons, since they were released 8 weeks in.

Not suggesting that they should add gear sets to it (although it would be nice), but the Sil'dhin Silvers could easily be a grind for the Lunar Envoy Augmentation items. I feel it can work if they make it a slower process, but I'm not sure how many Silvers would be sensible for 1 token of augmentation item, tho.

Currently, I don't fancy any of the items from the Criterion modes... to me, there's little incentive to run it more than once for completion track, whereas the Variant version has much more replayability value, nor just by the items, but the completion threshold needs you to run it at least 12 times to get everything.