How about making a new tab in Trade Office with Loot Spots and make them like the guild certificate...put them there
and asking a price and who will buy have automatically the LS.
Will be like searching Adventures on To ...dont know if this ideea was discused on the forum ... :P
But the seller when reach the last 40 enemys ...not the castle or the last one ...the quest for finish it must be locked until the buyer
kills one enemy...
hope is a good one