Syrcus Tower upgrade items are now useless.
Starting with the Defenders of Eorzea section of the MSQ chain, as of the launch of the Xpac, quest rewards are the full i110 gear kit.
We Vanilla folk, ran ST a gazillion times so we could get the tomestones, oils and sands to upgrade the weathered gear from Auriana/Aeliana to that 110 level.
Nobody needs them now SE, BUT you still have those SAME UPGRADE ITEMS in the loot chest for Amon and Xande!
Why not switch in an encrypted tomestone, a carbontwine, and a carboncoat in each of those loot chests.
The Ironworks i120 upgradable gear is still practical to use up to level 53-54 but having to wait possibly 13 weeks to get all the items needed for just one job, is sort of counteracting your desire to get new people into HW with the best gear possible.
Keep the weekly quest for those Ironworks upgrades if you so desire, since giving new players more chances to get the upgrade items asap seems a solid idea imho.