We are slowly moving through the house decorating, and I know exactly what you mean. We aren't doing anything structural, so the kitchen island with three pendant lights above it/bifold doors opening to the 'garden area'/huge living area with no walls to separate the rooms thing isn't on the agenda, but I am paying more attention to home decor than usual.
The above look does look stylish, but I think it will date in the way that boxy gas fires or arches separating sitting and dining rooms have dated. I also think that grey walls in every room, spindly legged sofas and low level sideboards are on the way out, but they are far easier to fix than structural changes.
Our house is laid out in a similar way to when we bought it. There are separate sitting and dining rooms (although the dining room has easy chairs so is used as a second reception room) and the kitchen is its own space. We did knock through a small breakfast room to make a bigger kitchen, but it is still a self-contained room. I much prefer having spaces with doors, so that people can do their own thing without disturbing others. This was more important when the children were at home, but even now that it's just the two of us I like to be able to work or watch TV, or chat to a friend in one room whilst Mr Dog can do his own thing in another. I know our layout is old-fashioned, but the open plan trend wouldn't suit me at all, and I wonder if people will start building walls and creating individual spaces again before long.
I do like a bit of colour too, and prefer a house to look eclectic rather than 'styled'. I like to see the personality of the occupants rather than an 'off the shelf' look of a magazine or showhouse.
