Just wondering since I haven't seen any BiS lists around, should assas rogues get 4/5p set bonus from tier? I got 2p already + engi goggles and 2 mastery pieces, should I replace those and go with 4/5 + goggles?
iirc, 2set is about 300ep and 4set is 200ep for mutilate so it's probably worth it but you should check it on http://shadowcraft-test.appspot.com/ to make sure
From the looks of things, 4 set is going to be BiS for assassination at least with the shoulders from Omnotron Defense System unless you get lucky with those crazy Al'Akir legs.