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 can install log wallpaper on the wall right behind the sofa in the living room. You can hang one floating chair where the love seat is located in the room, and put a love seat or a regular chair facing it. My advice is to have only one chair hanging, and not the whole set as it is shown in the picture you attached. This way, the hanging chair will have more impact. Also, make sure you balance the room on both sides. Meaning, if you hang a floating chair on the left, put something with the same visual volume on the right (floor lamp, plant, sculpture....) Notice in the second picture i attached how the two chairs are balanced with two table lamps of the same visual weight and height.

A large piece of art would look fantastic! Just taking a guess but is your home mid-century modern? I love your unique furniture!

These editorials might give you some more ideas [https://www.houzz.in/magazine/amazing-alternatives-to-wall-paint-stsetivw-vs~75306943[(https://www.houzz.in/magazine/amazing-alternatives-to-wall-paint-stsetivw-vs~75306943) [https://www.houzz.in/magazine/7-ways-to-create-an-accent-wall-without-paint-stsetivw-vs~93195441[(https://www.houzz.in/magazine/7-ways-to-create-an-accent-wall-without-paint-stsetivw-vs~93195441) [https://www.houzz.in/magazine/10-ways-to-create-an-unforgettable-accent-wall-stsetivw-vs~77848631[(https://www.houzz.in/magazine/10-ways-to-create-an-unforgettable-accent-wall-stsetivw-vs~77848631)