Most of Dawn Of The Dead
took place indoors.
While I certainly agree that suit-and-tie interference in creative matters is a bad thing, and reflexively came down on the side of the producers, that is a pretty high budget for a cable TV show. Why is it that high? Because of all the location shooting? In any case, I don't think it's really unreasonable for them to want to keep the budget under three million dollars when other shows manage on half that.