A long console under your TV....may have to lower the TV a bit. I would put some drapes or curtains up also. Not sure I would put anything on the wall by the TV but after getting the entertainment console, see how it looks first. A bookcase on the wall facing the windows....not on the TV wall would be good.

I know you only asked about the TV wall but other things I would like to suggest....a table and lamp at the end of your couch (Chair end) and a floor lamp on the other end of your couch. Also a small table between your chairs...something like a garden stool for guest to put their coffee cups.

What is your style? What would you use it for other than to anchor the TV?

Any of these that are not an enclosed storage unit.

http://www.ikea.com/us/en/catalog/categories/departments/living_room/10475/

Also, the TV is too high. When you get your console, you can lower it so the middle from the ground up is about 42" from the floor. Here is the Houzz discussion....

https://www.houzz.com/magazine/how-high-should-your-tv-be-stsetivw-vs~47203714

Some inspiration:

I think your sitting area is too far away from the TV. Hard to tell from pictures.