Giving items to villager to trade off in multiplayer games/worlds

currently we have a trading system with villagers where you trade just with them and its a set trade. we should be able to give items to villagers to trade off to other players on multiplayer games. say you have a totem of undying right, and you dont want it or dont need it you could give it to a villager and set an asking price for the trade. you would get a 90 percent return rate where the villager keeps 10 percent of the income. you would also be able to completly customize vilager trades in creative mode as this is a feature have asked for for years. you would also have to find the right profession to trade certain items, so if you wanted to trade a totem of undying you would need to give it to a priest. say the asking price is 10 emeralds and your friend is in your world/realm and they end up buying it you would get 9 emeralds and the villager gets one. i think this could be more detailed if thought about and more could be done with it please consider it. THANK YOU!!