Can anyone think of a more urgent need to finally bring Green Steel Deconstruction into this game at last? because I can't.
We already have the user-interface elements in place, in the House Kundarak Crafting Hall. Just implement some new "Dissolver" items to randomly show up in Vale/Shavarath/Subterrane/Devil-Assault chests. One for each GS Tier, to give you a random amount of Smalls, Mediums, or Larges, and another one to "disjunct" the GS item back to a blank state. Make it depend on the character's crafting level if you have to. ANYTHING.
If the number of mats you'll receive depend on your crafting level, it could also encourage players to try out the new system some more just to increase their crafting XP before they decon their GS.
It would be very uncool on Turbine's part to not compensate all the players who've lost their Larges to the recent bug, and I don't think they'll accept anything besides other Larges.