They wont destroy the game, just the games economy.
Its Cross Progress. This is whats causing the fucking issue, damn cheaters! Cross Progress was an important feature that Blizzard promised and they are not able to keep the promise, and this is why they are not communicating.
You know items are server based ID now right ?
Because we saw that auction house worked out well with D3 right?
I don’t know how apples are formed. But if I see a big red apple on a branch of a tree and a small green apple on another branch, I can say that the little green apple would certainly grow and turn red. i.e. i see auction house systems working in other games. These sever equipment and software must be similar. Why not add a working type to diablo2r.
This game is not WOW I want it the same as I played it 20 years ago. And this is not the place to discuss this. I am writing about server crash. You are writing things not related here! Please stop!
better to not ban this account, find all mule / involved accounts and THEN ban them . 
I believe they fixed the NPC…
Atleast it doesnt work selling TPs to him anymore
I have some doubts about the crashing and rolling back to dupe items.
The diablo devs are well aware of duping since … well since the beginning of time xD
So I guess that a dev can prevent the duping. Just assing a uniqe ID to each and every rune and item (UUID for example).
If there are two items with the same ID something went wrong … just delete in that case.
It might be difficult to prevent duping but it is quite easy to track down the duplicated items/runes.
Greetings
Exactly how many rolls of tinfoil did you use to make your hat?