The living area in the last picture looks nice but the corner with all the doors seems to just make that end of the room awkward.
You just seem to have a big empty space and I don't see how you'd take advantage of it.
Yeah, idea is more open plan. There is no plan to have any furniture near that area as we want it to more of a focal point overlooking the forest/garden.
That is a lot of glass going in. What provision are you making for heating the space? Underfloor? as you dont have much space left for wall mounted rads. Also how much insulation are you putting in? You are opening up your main living space to a heat sink. I installed Saint Gobain Securit C-lite glass to provide the best thermal efficiency but it was over £800 to glaze my bifolds but it has - Excellent U-value of 1.0W/m2K
We actually need to look into this, however, the existing radiator will be moving from the wall knocked down to the new wall (highlighted red). We will have two big rads in the room.