The thing is ninjutsu/mudra isn't as difficult of a mechanic as a lot of people say. Yoshida even said they initially released ninja overly strong because they thought a lot more people would have issues playing it well, but they ended up having to nerf it. It's more difficult to get off every positional while dealing with fight mechanics than being able to stand still in the safe spots and doing a ninjutsu every 20 seconds IMO.

I don't mean to hate on ninja; I love the job. I just think adding positionals is a completely fair change as long as it's not for every weaponskill. I'm just glad they aren't taking away positionals from drg and mnk to balance it.