Your family room is beautiful! I love your windows! When I look at them I imagine those long drapes that have one color on the top third and then another color on the bottom two thirds of the panel. I could see it in a natural or ivory silk with black on top and then one of those natural sisal rugs (that are kind of beige/ivory colored) with a black border around it. Pottery Barn and Target sell a bunch of those. Or just a natural colored rug with a black border. It doesn't have to be black btw. That was just a thought.

What a great space to have for you and your family! Unfortunately, I don’t think the current blue throw pillows are doing anything beneficial. To warm up the space, it would help to actually add in some warm colors. Think fire: red, yellow, orange, or a variation thereof. Try googling images such as “gray couch peach accents”, “gray couch green accents” (green can lean warm, too.) Find an image that really resonates with the feel that you want your space to convey. This can give you a better idea of what to look for when you do go shopping. You have a fantastic neutral base to build on, so don’t be afraid to add some bold colors, pattern, or textures. I realize these images don’t lean very “Farmhouse”, but hopefully they’ll give you some ideas of just how much you can add to your space and bring it to life. Have fun! ETA: Link to google pictures of Farmhouse, gray couch, turquoise accents.

I would suggest a slightly larger glass and metal rectangular coffee table to give this room more sophistication and lightness. There is some blue in the painting and I'd use that, rather than the orange for pillows on the furniture. You can also use blue and white since you have a white area rug. You have a gorgeous kitchen and dining area. Take all the pictures and clutter off the TV console and around the bottom of the fireplace. Have just a very few well-thought-out pieces on the mantel under the picture, nothing else. You do need a much larger console for the TV, but please don't use that area for family photographs. You could have a small table next to the chair by the window after you've cleaned up that area, and a have a few photos there in silver-colored frames, not wood. I see TV wires hanging down and that needs to be fixed. Unless you need the privacy and light control I'm not sure I would cover up these windows.

The TV is too large for where it's at now. It obviously does not fit so it's kind of an eyesore. In front of the window is not good as daylight backlighting is hard on the eyes. Maybe you don't regularly watch TV during the day, but there will be weekend sports events. I would put the TV on the wall opposite the window. Get a carpenter to make the TV nook match the bookcase on the other side of the fireplace. My feelings about the mantle and shelves is that the wood is too light. The black of the fireplace and that overwhelming TV make me want to paint the wood black, too. You would also need to paint the top of the half wall between the family and dining rooms, and that would also match the color of your dining chairs. However, I don't know how this might impact the other side of your dining room and whatever else might be visually connected to these rooms. I see no reason to change out the tile around the firebox, the color matches your walls and floor and you did not mention painting the room. I am loathe to suggest overly large pieces of furniture. They tend to limit design. If you want a chaise, get a chaise rather than a couch with a chaise. I prefer to mix sofas with chairs. Balance two chairs and a table against the visual weight of a sofa and its coffee table. You have two vents under the window that should NOT be covered. If you put a sofa there move it out from the window, and behind it put a sofa table that won't block the airflow. Such a large window could be a good place for an indoor tree. I hope you choose a colored sofa (love the color on the back of your bookcase) and perhaps even some patterned chairs. I am so tired of taupe on taupe. As a general rule sofas and chairs are 36" deep. A chair is usually 30-36" wide. Loveseats will be 60-72"' wide and sofas will be 72-84" wide. The variation in width can be attributed to the size of the arm rests and styling. Measure each of your walls. Then take your tape measure with you when you shop so you can measure how large each piece is before you buy it. Large furniture can look small in a huge showroom.