Consider wiring the new wall for TV, which you can mount on an articulated arm for adjustable viewing. Then find a small scale swivel chair everyone likes and get five of them. Arrange one of two ways; in a circle around a small round coffee table or hassock, or in two arcs coming off the right and left sides of the fireplace (three on the wall side and two on the slider side.)

I think this is the most you can hope to do in this space. To get the chaise in, you might have to switch the panels on the sliding door. Blue is TV. Green is wall decor, Yellow is lighting.

@BeverlyFLADeziner. I was thinking the chaise on the wall where you have the chairs with the chaise at the end by the window. The slider goes from right to left so I dont think it would be a problem on either wall. Would the balance of the room look okay either way?

Remember this sketch is not to scale.

So you don't want to be able to view the TV?? Not sure how you get into the room without jumping over something.