With the orientation facing north, we would still like to have living spaces on the south side and let the light from the south enter the house, but not have to access the north terrace only through the hallway, since that is then the "main garden."
You want the jack of all trades, but that doesn't exist.
It doesn't work so simply or at all, because the stairs certainly need to be accessible from the hallway. However, the stairs need a central position because of the attic space. That's why the semi-detached house is divided into north and south halves due to the stair position. You don't want to separate the living room from the dining and kitchen areas. Sunlight from the south only reaches the northern side for a small time window, which can be neglected.
If you narrow the open space (entrance on the east) and extend it from north to south, then you either have stairs open to the open space or another stair position in the east, which wastefully consumes exterior walls and prevents rooms upstairs from having windows.
A completely different staircase design takes up space in the attic.
You also don't want a creative loft semi-detached house for a family; that almost only works with two people.
If you want to bring southern sun into the north, you might do it with a mono-pitched roof, but this also doesn’t work here because there is still an upper floor needed for living.
Moreover, the question arises again what should be oriented to the south and what to the north. You end up going in circles.
If we then take the most sensible orientation—living room in the south and utility room with kitchen in the north with lots of window area—then eventually the beeping sound of a reversing electric car or doors slamming next to your living room wall at the carports will annoy you.
And however you turn it: you reject a separation of living room and kitchen.
For me, these considerations always lead back to what the architect planned because everything else causes far too many compromises in the house.