I guess I probably found it worse because it was about the time they started making the other three ninja all a bit more samey than they originally were. I found it compelling enough that he was the odd-one-out before learning “oh, he’s different because he’s literally not human. Ok.”
You make a point, and like I said, there’s potential for it in development down the line if it’s handled very well. But it’s certainly not worth tackling for a single movie, which was more the direction I think this topic was asking in.