Leather sofas can really dominate the room and can give an overall cold feeling. I would add some earthy elements, like a wood coffee table with glass or metal. Go to Restoration Hardware's website and look at their sofa room scenes. And I'm sorry I think the art is too harsh for the room. That's all your eye goes to in the room. too overpowering. I would look for something softer or maybe a cool mirror and I would add color to the room with pillows and some colorful lamps. I also think woven blinds would look great. They add warmth and give a finished look. The color of your window treatments should contrast your wall color a bit, not match it or else it starts to look generic and blah.. You have warm walls, warm floors and the woven blinds, like Hunter Douglas brand would pull it all together for you.

Have you ever thought about floating shelves? I think pairing a few floating shelves together would look great and would free up space in your living room. I really like the Eugene floating shelf from Bryght and I think it would compliment your existing pieces. http://www.bryght.com/product/160/eugene-cocoa-shelf

Perhaps a large round table might mean a rug is not at all necessary. It could be a metal tray table, or carved wood like Rebecca Mitchell Interiors illustrates. Ideas also to consider, using multiple tables can be found at http://www.houzz.com/multiple-coffee-tables. I also agree with comments above that some color is needed on the walls. You could then hang round mirrors, or an unusual curved shape like RMI shows above.

Your rugs are beautiful and very good quality. They compliment your property well. It is natural for wool to shed at first, but it will eventually stop. You can get a special carpet rake or use a broom to rake or brush the carpet weekly and also vacuum it once or twice a week. The shedding should stop after a few months. Once you get through that period, you can enjoy the many great qualities that wool has. It is extremely durable, more stain resistant than most, flame retardant and self-extinguishing, and it actually regulates temperature & humidity in the home by absorbing & releasing moisture as needed. That's how it amazingly feels warmer in the winter and cooler in the summer. Good luck! Don't give up on your rugs just yet!