re: Fireplace Design Help

Is it possible to add sheetrock(wall) to the left side(stairs) to make it symmetrical. Basically full in the upper left with wall. Then fill in the TV hole, stud and sheetrock. From there I would add another set of built in shelves to the right of the existing. Add a mantel above the fireplace. The fill in of the wall and built ins will help it not look as "off" as it is now