I would change the mantel to something less formal and move the TV over to the fireplace.

You have a rustic stone and beams, with more formal mantle and furniture. Look for some inspiration photos and go from there.

Furniture and tv placement look functional and comfortable right now. I agree that a large rug, extending to under all the seating, would be nice. The piece the tv is sitting on is so dark, I'd do something to lighten it, especially up top: remove? paint? paint whole thing?

If you can remove the fireplace mantle and hang a larger artwork, that would add interest without adding clutter. I like the look of Beverly's last picture a few comments above this.

The ceiling fan could be more modern.

How often does anyone sit in the gray sofa on the side -- could it be swapped out for lighter chairs like on the other side, or slip-covered?

Great light, windows, and nice TV set up. You have good bones to start with.

Paint the tv cabinet to match the walls so it blends in and has more of a custom look.

Remove the mantle over the TV. You don't need one and the current is the wrong size. Hang a larger picture over the fireplace instead of having mantle.

Large rug that all of the front feet of the furnitiure will fit under.

If you are not dedicated to keeping the leather sofas then I would certainly at least purchase a replacement for the two seater - it reminds me of a first class row in an airplane. I'd get two more chairs there.

The space is very neurtral, which I like. I think there are a lot of directions you can go in with rug, new chairs, artwork.

Your leather couches would be fine for the media room, but not in this room. What struck me is that the art on the walls is all family portraits. I wonder if those can go in the hallway or the den and be replaced with paintings. Find beautiful art that moves you or reminds you of things or places you love.

Agree that much larger art would be good over the mantel - art that is as wide or almost as wide as mantel itself. I would not remove the mantle & wouldn’t paint it. Hang a much larger piece - not a family photo & remove all the small pieces from the mantel. I wouldn’t put TV over FP either - unless did remove mantel & you invest in a larger one that shows art when TV not being viewed. I’m on the fence about the brick trim - I like the look of the last picture Beverly shows you with the mantel light color like the FP stone & the stone all a light color. But the beams & built in cabinet are also light color so that’s why I’m on the fence about changing mantel color as it wouldn’t match your beams anymore. But, the brick painted same color as FP stone maybe. That would be a nice texture & interest but wouldn’t jump out & look so choppy as the reddish color brick does. The other thing that struck me is all the small framed photos scattered around- I think there’s too many & they make a cluttered look. I’d gather them up & make a gallery wall with all or most of them. Add them to the arrangement that’s over the pew in entry - all white & black frames would make an arrangement with impact. Or, add them to the black framed photo in the hallway - all the black frames an eye catching array too. Is the current picture over FP a size that fits into the niche? The small pic & piece are lost in the niche - need something there that’s WoW! For furniture pieces, the small white console piece with lamp on it next to FP seems too dainty for the room. I’d move it out. There’s no other lamps in the room - does anyone sit & read in the room? The only light in evenings looks like the overhead & that’s not a cozy inviting look. So, a lamp on one of the end tables? Agree that a rug would be nice in the space for color & softness but maybe you prefer no rug. But, would the person on sofa be more comfy if there was an ottoman or something to put feet up on? The tables seem so far away but is the sofa also a recliner?

The room is really stunning and nice and big!

Here are some inspiration pics that you might be inspired by; consider bringing in a designer if the store where you buy new furniture has one?
1.

Wyoming Residence · More Info

2.

Biltmore Forest Romantic · More Info

3.

Coronado Back Bay Shingle Style Residence · More Info

4.

Cathedral Living Room · More Info