A message from the Fractals team:
As a result of the infusion changes that were introduced with the July 26 release, some high-level agony infusions, +16s in particular, are no longer useful to players. Since then we’ve been monitoring your feedback and proposals for rectifying this issue.
Some players have requested that we extend the Infusion Deconstruction tab on INFUZ-5959 to include agony infusions up to +20. Unfortunately, this is not something that we can do. Due to the exponential nature of infusions, allowing all high-level agony infusions to be deconstructed would introduce up to 180,000 +9 Agony Infusions into the economy. With only ~300 +9 Agony Infusions currently on the trading post, a massive influx like that would be problematic to say the least.
We will instead allow players to trade in +16 Agony Infusions to INFUZ-5959 in exchange for 5 of the new +5 Attribute +9 Agony Infusions, of an attribute of their choice. As these new infusions are account-bound, this will allow players to recoup some value from their +16 Agony Infusions without the economic problems that come from full deconstruction.
For players with infusions higher than +16, INFUZ-5959 will let you break those down into multiple +16s, which can then be traded to INFUZ for the new infusions. If you have a +14 or +15 infusion, you can use artificing to combine those into a +16 infusion, which can then be traded to INFUZ.
We’ve scheduled these changes to go out with our next patch. These options will be available to all players, so when that patch hits, all you will need to do is bring your high-level agony infusions to INFUZ in order to exchange them for the new ones.
Communications Manager
Guild & Fansite Relations; In-Game Events
ArenaNet