GT5 needs two things that GT5P didn't have...

Destructoid: "I've always been a fan of racing games, every since I first played Mario Kart 64. Those were the good old days, when I was younger and times were simpler. Actually even today I crank out Mario Kart DD once in a while for late night multilayer gaming. I later moved up to Need for Speed starting with Hot Pursuit. That game's offline multiplayer was a blast, especially the cop chases. Then I moved up to the world of GT and later Grid, the more realistic driving games. It took a little while getting used too but I've always chased after realism and now I love GT. Now I'll agree that GT5P is realistic as it is and I was impressed, but there is always room for improvement. Here are two realism improvements I hope for, in GT5, next spring..."