while I certainly can't define for you what is fun and isn't, I just as certainly feel that comparing Starcraft, or any other PVP game, to TL2, in detail, is pointless. Sure, a maphack where you can see where the other guys are would suck... if you're trying to kill them. This is a co-op Multiplayer, not a PVP. So the guy makes himself a god-sucking weapon, or can see all the way across the map environ. Who cares? If it bothers you that he's got it easy, there's a simple solution. You create a new dungeon instance, reset the map, set a password, and give it to the people NOT using the god-suckers.
“I like my iPod carrying cases the way I like my women: water-resistant, polyurethane, cheap, and easily stored.”
"Also, Vader is Luke's father, Snape kills Dumbledore, and Bruce Willis was dead the whole time