Comfort and Convenience
Cabin temperature is rarely agreed on: one person wants cool air on their face while another finds the same draught unpleasant. Differences in clothing, seating position and simple personal preference explain most of it.
Safety and Driver Assistance
Wipers, lights, demisting and hazard switches are worth locating while parked, not while driving with people talking behind you. Preparation is simply knowing where your hand goes when weather or traffic changes.
Multimedia and Connectivity
On longer trips a passenger's phone battery usually runs down first, so somewhere to charge matters more than sound quality. If a charging point is available, its position decides whether the cable reaches the back seats.