In the US, both the trade and the National Electric Code have a distinct preference to laying out branch circuits by room as much as possible. I lean towards t

In the US, both the trade and the National Electric Code have a distinct preference to laying out branch circuits by room as much as possible. I lean towards that view as well, as it is a better logical organization for servicing and means you do not need to cut the lighting to half the house to work on a fixture.