Revision of Delve Drops [R/E/M Materials]

A sort of follow-up to this thread: http://forum.square-enix.com/ffxi/threads/45160-Balancing-the-Ergon-Quests?p=532641#post532641

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Could we have a revision of the drops in Delve from NM's? Specifically with regards to Pluton, Beitetsu, and Riftborn Boulder Boxes? Would it be possible to include Aged Box [Bayld] to the pool of potential drops from the NM's in Delve areas?

I understand that people still need Pluton, Beitetsu and Riftborn Boulders for their various needs but keep in mind that those same items also drop from High-Level Battlefields very frequently and in high amount. Perhaps lower the drop rate of those three types of boxes and include Aged Box [Bayld] into the potential treasure pool?

Delve is an event based in Adoulin so wouldn't it make sense that High-Purity Bayld boxes would come from it? Anyone doing an Ergon weapon would need to farm a fair number of Delve runs to get the Pristine Yggrette Crystal for the final stage as well as the various drops from the MB's, so wouldn't it make sense that the primary currency used for Ergon Weapons would also drop in there?