To be honest, if SE is going to expend effort in a coffer for Alexandrites or a specific trade-function ...then I'd like to see something more worthwhile:

Give us a storage container of 500 items that is only accessible in Mog House / Wardrobe.
More Storage Slips.
Capped Rank items (R15 REMAs, R15/20/25 JSE Neck items, etc).... should all be storable.