They aren't really hunters though. Like in their story. They don't "kill" people in a literal sense, they kind of "collect" people when their time comes. They are omnipresent, "a force of nature".
Being able to hunt anyone at anytime
Yet she has the lowest MS in the game? and as far as hunting people down they are one of the worst champs in the game at it. She is slow AF, with nothing but a slow for cc, and ult that goes against not only her character, but any semblance of her being a hunter. all the champs listed except mord "hunt" a hundred times better than kindred. I mean, if you are hunting people down, you are chasing them, but her entire kit revolves around staying in once place.
As far as two in one, I think people expect an Elise/Nidalee type of kit but with two champions, and will always be disappointed when that doesn't happen.
I don't think it gets more disapointing than saying that you are gonna make "a true duo champ", "2 characters in one" and then make essecially
with 2 voice actors lol