Hi! While I somewhat disagree with arcy, I do think that for a contemporary look, less is more. Perhaps, for such a long expanse of wall, you’ll have to have a carpenter custom build a lower console, much longer than typically found in shops. You could then possibly do a feature on the wall itself of some kind. Or a few floating shelves with small spotlights under them. Or perhaps surround the tv with simply framed coordinating phots. Here’s a couple of pictures I found that somewhat convey what I’m thinking.
Q