The problem is that it's not selfish enough. The dps it brings doesn't compare against most utility's currently as of 4.2 . The development team and Yoshi-P promised that they would look at jobs after Monk and look to make raid utility close to equal all across the board. Samurai offers the slashing debuff something that Ninja and Warrior already provide, without anything else Samurai will always have a hard time finding groups or staying popular this expansion. My suggestion is to increase the slashing debuff that Samurai provides up to 15% and prevent it from being overridden. 5% boost to Samurai damage 5% extra from both Tanks and Ninja. That will give still make Samurai a selfish damage dealer but more accepted.