Right now it looks unbalanced and cluttered....I'd hide the wires and have artwork....another large square on the left to balance it.

How about a lower and much wider tv console?

I would like to see the rest of the room and a floor plan sketch.

I would also go with a lower wider console and repaint the wall behind a solid color to modernize things a bit. I think it was a good idea to put shelving/art on that side of the tv to balance the window, but perhaps a piece of more structured art would work better.