The GT-S was reasonably well equipped when it was new, but judging it against a modern car makes it look prehistoric. There is no CarPlay, Android Auto, modern driver-assistance system, digital instrument cluster or sophisticated connected-services architecture.
Yet the original equipment list makes sense when viewed in period context. Air-conditioning, power windows, power steering, sport seats, keyless entry, cruise-control availability, CD audio and a practical liftback body gave it enough equipment to function as an everyday car.
The mechanical specification is where the GT-S earns its badge. A six-speed manual, four-wheel independent suspension, four-wheel disc brakes and the high-revving 2ZZ-GE give it much more serious hardware than its modest displacement suggests.
That combination is what makes the car interesting today. You can modernise the entertainment system fairly cheaply. You cannot easily manufacture the character of a naturally aspirated engine that wants to keep revving.