Why not start a threat to collect ideas about how dupers and cheaters could be stopped? I've seen some pretty good ideas on this board. I've written down what seems doable and reasonable. Feel free to add suggestions!
- Cross-sharding seems to be an issue. Do not allow certain items to be transferred to other shards (like runic kits or anything else that is object to duping).
- Certain items should be bound to an account and not be tradable (like runic kits). Trade manufactured goods, but not the runic kits!
- Trial accounts should not be able to own certain items. (I would even go so far to say that trial accounts should not be able to own ANYTHING. It is enough when they can walk around and watch things.)
- Do not put items into the game which are too rare and too hard to get. Those items create an imbalance and encourage dupers. And those in existance should be bound to a character.