What feature is better for home resale value?

We have a very small master bedroom. It does not fit a traditional bedroom set (bed, dresser, 2 nightstands, chest/armoire.) There is a fireplace in the living room, which is connected to the bedroom. There are two small closets, not walk-in, but very small. My idea was to get rid of the fireplace and make it a walk-in closet, and remove the 2 closets and make the room a little bigger. He thinks the fireplace is the better amenity. We live in Charleston, SC. It can get cold, but not too cold, and we will never use the fireplace. I also had the idea of putting one of those "fireplace heaters" on the wall. Any thoughts.