I just don't see it as being valuable. Nothing in particular against it, but I'm expecting the characters to show up about 1 inch tall on the screen. Or less. So, whether the guy is doing an overhead chop, or a sideways slash at the neck, it's not something that I see being incredibly noticeable.
That said, I'm making some assumptions in coming to that opinion. If things differ from my expectations substantially, I'm up to changing it.