graphics by themselves are far from the be-all end-all, there's a LOT that goes into creating a realistic virtual world other than having your main objects being modeled with 100,000s of polygons..
-lighting: daytime/night time, realtime headlights/reflections
-realistic and physically correct weather effects
-rain/snowfall
-water accumulation on the track (affecting performance, like hydroplaning for example)
-water hitting the windshield (from rain and cars in front of you)
-dust being kicked up and interacting with other cars/windshields
-wind, leaves in an autumn setting being realistically picked off the ground as a car drives over them (think back to the mini ring)
-tire tracks on the track surface and its effect on traction
-deformation (VERY HARD) such as realistic collisions with the environment and other cars, parts failing or falling off as a result of a collision and interacting with the track and other cars
-higher quality crowds and backgrounds (trees and crowd could def use more polygons), etc etc
there's a loooot of room for improvement still.. maybe on the PS4 and GT7
aaaaaaaand of course, driver AI
ps: seriously, give me all those things i just listed, all porsches/lambos/ferraris/maseratis (and some bentleys and rolls royces for fun), and 100 tracks (all gt4 tracks in HD glory as well as a variety of new ones), and this will be THE PERFECT game
