I've witnessed so often, how people were asking for Poly Pillows or Ai Armor in OOC to equip something, and didn't get help, and it makes me sad. Because I for example really would like to help people out with whatever they need, but of course I wouldn't lend such valuable items to a random stranger, just to never see them again. And that's probably the reason for others as well to not help, because we know we can't convince a GM to give us our stuff back after a trade was accepted.
So that's why I kept thinking on how to maybe solve this issue, and came up with this: A trade secured with some sort of contract both players need to accept.
The contract could say something like "Player A borrowed Item X from Player B and will give it back" or something. Doesn't really matter.
That way the GM will get an info that this trade was made with a contract and in case Player A doesn't get Item X back within a set timeframe, the GM can part Playber B from Item X and give it back to Player A.
This wouldn't affect the normal trade which could still be done by "accept, accept, yes, yes". Just add some sort of button that can be selected when trading.
Tata