Why do you need anything if it's working as is?

There was a large soundbar mounted under the tv that did not work when we moved in. We took it down and I think I would like to have some Sort of shelf under or next to the TV. There was no plan to move the tv, just add around it

How about some pictures and wall decor around the TV? That may reduce bulk of it. I think a shelf with the wainscotting might be too much.

You might be able to fit a slim console in there, maybe without the side table. But honestly I think your TV looks pretty nice on its own, especially with the dark wall color. I think it's fine with nothing under it if you like the look.

Maybe look into a tv frame. Make it Look more like art.... beautiful space.

I agree, I think the wall needs something. I looked at wall mounted tv photos - maybe a narrow rectangular piece of art or photo above the tv or a row of objects or photos mounted above or starting on the left and wrapping around? I could see something like black and white woven plates.

I saw some shelves ABOVE the tv as well.

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I'd rethink your sidetable and lamp when you can get to it, too. It's such a gorgeous corner - an arc lamp and large plant ( with the sofa pulled forward a few inches off the wall) might be an option. At the very least, I'd spring for a new lampshade.

Lovely room