[Suggestions] Improvements for the game

Hi, this is the one to resolve one of the most painful aspects of the game, one that creates a lot of conflict and upset in players.
Many players use clubs to trade and exchange items, however frequently rogue players would jump in to purchase a rare item posted for somebody else. Or it would be done by mistake
At the moment there is no mechanism to prevent this. It creates  lot of friction, argument and conflict in the game. And that being a game I think it should be avoided.
It is very simple to solve by adding "private sale" option to the item one wants to post, so when someone tries to purchase - seller can be presented with a dialog, something like "such and such wants to purchase this item" and an option to allow or not the sale.
Something like this already exist for the sale offers made by fire/police e.t.c - these ask you if you want to sell N number of items for X price and you have option accept/decline.

Again implementing such a simple system will eliminate main source of conflict between players in the game.

Thanks