Currently the only sort of third party inventory management available to a player is via using mobs in RD to collect your phat lewtz rather than checking every grave yourself. Rather than this being limited to one area my suggestion is that all base/prestige classes have a thrall skill which summons a NPC that is neither able to be attacked via spell or weapon. The thrall would be able to be accessed in the same manner one would a merchant except you can "buy" their inventory at no cost within a specified range.