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 think a comfortable distance between the island and the counter is around 42". It seems that you have only 30" between your cook top and the counter. I might be a little too tight. The wall between the entrance and the kitchen could be 4' long instead of 6', you would then be able to move the island a foot which would give you more room between the cook top and the island. Could you switch the location of the toilet and vanity in your dad's bathroom so your enter facing a vanity instead of a toilet which is a lot nicer.

We have taken help to prepare a layout plan of our apartment following are the key highlights 1) Would prefer unless unavoidable false ceiling lights, am more of a wall light or floor/desk lamp person 2) Kitchen layout is such that a large refrigerator cannot make way at the entrance of the kitchen.The left wall edge at the kitchen entrance can be torn down the right must stay (beam). Considering this I was thinking to take the slab to my right of kitchen entrance and keep the refrigerator 3ft width and 2.6 feet depth top left of the kitchen right next to the window and start the double sink right next to it. The right side of the wall to have cooking range and kitchen slab and aligned to the kitchen entrance wall a tall cabinet which will house the oven and microwave 3) The dining space has two two spots one adjacent to the kitchen and utility finishing at the study door. The second opposite to the kitchen entrance the cross path of Kids bedroom and master bedroom. 4) We wanted to have a 6-seater and looks like both the above spots as mentioned in point 3 cannot house it. Also we dont prefer a dining table right across from the main entrance. Hence we are looking at keeping a 4 seater (extendable ) aligned to the wall of the kitchen and utility area which finishes at the study entrance 5) There is an option to cave in the utility area into the living room , will that be of any good? 6) Entrance foyer - to have wooden beam like (lighter tone) work on ceiling and the wall on the right as we enter the apartment to have a low height shoe cabinet upto the edge. The edge of the wall to have a separator or Jaali to keep the visual away of the dining space from entrance. The shoe cabinet wall would have a large mirror on the upper halve. 7) Study room we prefer a colonial classic set up the powder room/small bathroom is being torn down to make that a part of the study. 8) Master bath and dresser area will need adjustment hence we thought of taking down the left wall of the bath and making the area look bigger. We are trying to avoid any plumbing work but there is an option we can do if there is a better plan. 9) Need ceiling and flooring ideas for the entire apartment. As of now we have thought to have a thematic approach of open beam light / heavy as a continuous theme in various ways all across the home.Marble tile of ivory is what we have thought now,with master bedroom and guest room to have a wooden flooring. Challnege is that builder has already provided flooring which we don’t like.So we can go tile on tile or break it up. 10) Guest room opposite to master bedroom has a cabinet designated area. Right beneath the window rather adjacent to it we prefer to have a seating area of 1.5 feet wall depth. 11) Kid room adjacent to the living room – we are looking for an idea for a cubboard. He is a 7 year old, hence making it childish theme and superhero look is not what he likes. He is a chess guy. Slightly serious for his age. :P 12) Looking at décor and design plan for both the balconies 13 ) any idea of change or improvisation for the rest of the two bathrooms 14) Want to prefer a sneakaway bar 15) Main entrance we prefer a larger 8 feet door than a current 7feet. Also entrance from outside wish a stone wall. 16) Does the idea of living room with one stone wall look good or rather textured wall in ivory. We wish to have large 7*8 or 6*5 painting on the opposite wall to TV above the sofa. We prefer the entrance wall of the living room to be the TV unit and Kids room wall of the living room to be the sofa wall. Largely to limit visitor free view towards the inside home areas. We also wish to have the TV sitting on top of an unit rather than wall fitted. Next to it could be floor lamps. I can also post additional photos or videos if required

@Cornerstone design studio: Apologies for making big post; thought that more info will help. @Rupal ji, If it sounds like I dont need any changes; my apologies for that. Let me put it in short,"I am looking for options that give modern facilities without leaving good things from old charm/ comforts. " Thanks for the straight forward comments. I shall try to edit my original post to make it simpler and that looks open to new ideas.