Anyway, I much prefer the human conflict over zombie conflict. Better the walkers be used as a backdrop against the human storylines.
But the series is not the rest of AMC's lineup--the series is about "survival horror" (as Resident Evil
is described), and if the walkers simply become wallpaper, the horror disappears.
Season two's big moments centered on zombie attacks, or their effect on the group: Sophia's fate, Dale's death, Shane wounding Otis, and the mass zombie attack which closed the season.
There's no horror in psychpaths; they're just annoying, and you want them to die quickly, as in the case of Shane and the Governor.