Here are few things I’d like to share on the matter:
Regardng your question, from what I’ve seen so far there is no actual, reasonable explanation.
I have looked for one far and wide, even asked straight up questions to MvP MissCheetah and got no response.
The way I see it, there are crazies out there willing to spend money on third party sites.
I do not believe for a second, that the game should lose basic functionality because of some crazies out there.
I should be able to give items to friends, and they should be able to give items to me, even if we were not both online in the same game when the item dropped.
So far, I’ve encountered only one legitimate concern about trading, and that is the so called flippers. Players, who would amass wealth, then start buying items and re-sell them for a higher price, which artificially raises the prices of items.
I think we can do without those, which is why I am not against the idea, that items should be traded just once.
However, I am against the idea of potentially BiS items being bound to you upon you picking them up.
Another concern, that people bring up, that I do not find to be legitimate, is account compromises. To that I say:
Diablo is a game for mature audience. Blizzard should treat their Diablo players as such.
The security of your personal computer and that of your battle net account is your responsibility. Blizzard have done their part on their end. They’ve written articles that teach you as to how to not get hacked. They have added features such as the keychain authenticator, the mobile authenticator, there’s SMS protect.
With all those tools, for someone were to steal your items, he would have to be a freaking Blizzard employee. No one working there will risk his job to mess with your account.
The big boom of hacked WoW accounts back in 2007 or 2008 was a result of people downloading addons, that contained keyloggers or even exe files. This is not going to be a concern for Diablo 4.
Also, most “hacks” nowadays are not even actual hacks at all. It’s stupid people or children giving their account name and password, supposedly to get free skins.
Like I said, Blizzard should treat their audience as mature individuals.
2 roll backs per account (if I am not mistaking, that’s already the policy for D3).
If you still haven’t secured your machine and you are constantly getting hacked, ban the entire battle net account and be done with it. No individual should be allowed to constantly occupy support with his BS, while people with legitimate issues that are not braindead have to wait forever.
I’ve only been hacked once. I followed Blizzard’s guide, I secured my machine, got my account back and I’ve had no problem. I’m not tech savy, so if I can do it – so can everyone else.