The game isn't finish and all the features was not include in this demo event (weather/time change, tire strip, damage etc ...)
It is sad to see people jump into a final conclusion based on what they saw or hear from a streaming live.
It is like saying: "oh my house under construction doesn't have a roof yet ! I'm not gonna buy this ****, it will be rainy all day long..."
Take the positive note, like the graphics, the new features (scapes, livery editor...) and that FIA championship. It's all step in the good direction and it is promising.
As for me I think the photomode is a truly porn for the eyes, the social mode and its companion app sounds good too, the graphics, the cars selection, UI interface, music menu... There's a lot to like.
Gran Tursimo is not only about hardcore racing experience, it's about automobile passion, and you can feel this passion on every GT. This is why Gran Turismo is Gran Turismo.