Strides have been made to reduce luring so why should the same thing not happen with scamming? Very well known people will pay for rares to be lent to them so they can scam the unknowing with a little bit more ease. Make it so you physically can not accept a trade screen with an item in the lent slot if the user getting it has cash/items in the their trade window.
Allow more items to be lent through the lending system, canes, shoulder capes, TH items and so on I see players all the time who want some of these items but most have an insane value to them and players are not sure if they want to blow money on it only to find out later on they don't actually like it so it would great if those of us who do have it can lend out more of these items to give players the chance to find out if they like them or not before spending the cash on them.