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.

I don't think your floor drawings attached, but let's get this started. First of all, coastal India means you have fabulous elements to draw from and you can use lots of color successfully! Pull together a palette that will give some continuity to the entire space. For example, include a blue that is found in each room (enough to notice). And when mixing patterns and textures, take a good look at them together before purchasing to be sure there's some flow. NOTHING needs to match, but they all need to get along.

I like the room but it looks a bit empty. Possibly some contemporary low interesting cabinet on either side of the fireplace some organic baskets or metal vessels of some sort on top of the cabinets. It will fill in the bareness between cabinet and sconces. Roll down textured shades at the windows would add a nice fill in touch and add privacy and block light. Or simple linen floor to ceiling curtains on rods at ceiling height. Here are three rooms with free standing cabinets and long curtains at the windows. You might like these ideas for not. Art work could be under the scones with lamp for ambient lighting Again simeple cabinets and surprise, a TV stand too. This is a lovely idea too with the twigs; could change seasonally. I like the benches for warmth and texture and softness and the chandelier adds a dramatic touch. Good luck with your lovely room!

I would go with the second plan, more or less. Having a fridge right next to the wall seems like a bad idea to me, and I personally can't stand ranges/cooktops on islands--I like the hood venting straight outside. But I would want more countertop to the left of the fridge--when I take food out of the fridge I would want to plop it right onto the counter, and it looks like there's not enough room as it is.