One possibility would be to swap the living room and the dining room. Since the current living room is larger than the current dining room you could still keep some comfortable seating (couch and upholstered chairs?) against the front wall for a keeping room/dining concept. Then your new dining areas (kitchen and dining room) and living areas (living and drawing room) would have good flow between them, which would work well both for family and entertaining. You could also add some builtin bookshelves in the drawing room or new living room to create a library area to add another fun element to the living areas. These bookshelves could be against the long walls in the drawing room, around the window with a window seat in the living room (former dining room), or built to create some separation in the open area between the drawing room and living room/stair area. Your plan seems to show some sort of builtin there, but I'm not sure what it is.

You have all the reasons to redo the house, its very lifeless and looks worn out. I feel creating a separation will terminate the spaciousness of the room. Adding colours will surely help, Since you have a tan color sofa,I suggest grey, white or light blue color on one of the walls. Add some art works of the color you chose for the wall. This room needs some fillers like , books, throws, candle stands tall and lean. YES DON FORGET 1. Mount the tv on the wall make some space on the floor and Fix a large size mirror ( Wooden Frame if you can afford).

The first thing that bothered me in this room is the distance between the seating area and the tv area and that both seem unrelated in everything. I think what you should do to pull everything together is the following: 1) Move that sectional away from the back wall and the curtains (placing couches against the wall is outdated now) and closer to the tv 2) Center the coffee table under the chandelier with the sectional placed 16 inches away from it 3) get a console table of a height equal to the sectional's back 4) place few decorative items, stacks of books, candles, lamp shades whatever you find suitable on the console 5) someone mentioned that the two accent chairs are not in scale with the room. I totally agree with that. You need wider chairs with a low back 6) A rug is a must and two are better than one, layered of course !! But make sure the biggest one is big enough to place all the seating on it. 7) pillows and a throw will add warmth and texture too...

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.