dont know if someone has said this already, but definately they should have more 90's japan imports, like skyline r32 and mazda rx7. And more european cars. There is already audi, mercedes, ruf, vw, alfa romeo, aston martin etc. but i would like to see more middle-class cars like vw, like peugeot, volvo, fiat, renault, opel. But i dont think they will have such of cars like those europeans, because any of those doesnt have good "street-race" cars. But you never know. Allthrough, peugeot 206/307 would be great off road car, with some wrc tuning kit :p And ofcourse they have to include the mr.bean car, British Leyland Mini. Hah, i can imagine, how you could put powerful engine from another car, tune it to the maximum and then show off to some nub with his new lambo, and make him eat dust.
What a beauty :D