Well Archeage is a really good game at design level but I'm stopping playing now. The amount of hacking that is visibly going on and goldselling etc is just annoying. Add into that there is now a regrade+upgrade hack and you wonder what the point is in a PVP orientated game. It's shame as the freedom allowed and some of the design choices are just excellent and I've not enjoyed a MMO such as this in a long time but Trion - I certainly won't be playing one of their games again but I do give a lot of credit to XL Games.
I don't understand why MMO after MMO has problems with hacking.
Surely you design these games around the principle that the client is compromised? Ie you cannot trust the client, so all transactions must be validated and performed on the server?
That goes for little things like your position, whether you can see something, if you own something, etc, etc.