ok im going to suggest something here and while some people will say "no no you cant do that because reason X", simple fact is if your skilled enough it can be done.
ninja can use BLM accuracy currently and blow the other classes out of the water due to more det/crit/ss
why? simple, ninja doesn't have any flank positionals, hell, to be honest i did this exact thing in t13 before my group wanted me to monk it.
simple fact is if ninja doesn't get positionals, there's going to be some fights that it simply destroys all other classes due to the lank of a flank allowing it to go for BLM acc, whereas if its balanced with that in mind it will be extremely weak in other fights due to not being able to do that.