I kinda wonder what the scope of this show is going to be anyways. Like how many seasons are they planning on? Clearly at this point, they're not in danger of cancellation, so they probably are going to have to choose when to end. Personally, if the quality remained consistent, I could probably watch this show for a very long time.
But maybe there's a point at which they will be satisfied with this story? Like maybe Rick dying or something. I don't know what their ultimate goal is, but I'm guessing the ending is not going to be the end of zombies or anything happy like that.