Issue with the Pass treasure to next person is simple They will not do that.
As far as People getting items in pool that they already have, SE has been doing that for years, Sky Sea Limbus Abyssea everything has that happen. So many times have I seen Sell able rare and non sell able rare/ex items hit the floor because everyone had those items. SE simply does not care enough to change that fact. It would be great to have options to limit what you can get by already having items in your inventory like Bodys and Acc. Only way to change this is to Spam the total number of post not just keep 1 or 2 post Running though 20+ pages of comments Start new post every day about something you wish to change that is how They see you want change.