The new Wakajin spec is very effective in the unranked WZs, I've been using it the past couple of weeks. I have been hitting 5-600k total damage (pretty good for me) with the most kills/death blows in most of my matches. The only 1v1 I've lost was to another assassin but he/she was just better and faster on the keys, so that was a PEBKAC error. When used with 2 pieces of Force-Master gear for the additional healing with Crushing Darkness it becomes pretty effective. I don't have a guild or a consistent team so I can't comment on Ranked WZs, I can see where it may be lacking when compared to lolSmashers in terms of burst damage.