I don't have the game, but looking back, GT4 would be a great game if released with touches from GTS.
If GT7 had the endurance races. 9 hours, 4 hours, etc. Add the 20 cars, dynamic weather, today's graphics, all cars in Super duper ultra ultra magnus premium, of course competitive AI, it'd be an awesome game.
The tuner races at Apricot Hill, MX-5 endurance, all that would be such a good experience in GT7.
I think GT4 still holds up for everything it's got. Amazing we've played these early games with only 6 cars on track.