I don't really think that daredevil and his desire to not kill are too much like Batman. He won't kill because he literally believes he'll to to hell if he does, even though he actually wants to kill his enemies. Hence his focus on fighting for the law, even more so than justice as Batman would. Batman doesn't work inside the law, and frankly doesn't really care that he doesn't either. Daredevil tries to because he wants the system to work and it's a constant conflict in him that it doesn't but he still wants to believe in it, even when people like Fisk subvert the law and it's institutions completely. There's a lot more nuance there than with Batman for me.

And as far as the ninja stuff, give me daredevil over Batman just because in this show he's a damn badass and does it without the money and gadgets.