I am a big PNP player, and also a big ddo fan, but one thing i learned is that shuriken are useless without being able to throw multiple (i think up to 3) shuriken at once, and that they all count for sneak attack if you manage to get it, could you add this in the game? also to throw multiple shuiken at once, you need to have the "Rapid shot" feat, if not, you only throw one.
and a side note, i think bluff should be a passive ability to rogues, because it's useless for a rogue to "Cast" bluff on a creature, then attack it for a sneak attack......