Here is an easy way to strike a balance
Bring in something tall to add height and overshadow that TV. It is worth noting that all of these arrangements are purposefully asymmetrical, with something tall on one side and something shorter on the other. It is easy on the eye to look at this stylish room.
A vase collection is always a good filler for the end of a TV unit. Use the same color palette but vary the height, width, and texture. And for those who were born with a green thumb, try some tall plants, too. They will add variety and a touch of color.