The biggest issue here is simply that GGG needs to implement Stash-to-Stash trades. That will remove the need to "trust" people during retarded trades like how you have to use locks to convert mirrors to divine. They also need to itemize everything that is tradeable. For example, itemizing vorici benches, aisling crafts, etc. There's no reason you can't. They already itemize beast crafts for example.
If they don't want an AH it's fine. But you should be able to initiate a trade as normal, and on the trade interface, have a button to switch to trade stash mode. Then, you just select what you want to trade and the other selects how much they are paying for it, and upon completing the trade, put the items in the affinity tabs as needed, and if affinity isnt available or out of space, create a remove-only tab in the receivers stash that contains the items. Don't let them do another stash-to-stash transfer if they have any remove-only tabs, to force them to keep up with it. This way you can click divine, and just type in 900 divine, and the other person can type in 1 mirror. Asks for confirmation, confirm, and walla each person stash gets the relevant items.
That would resolve everything.
