So I've been thinking about this for a while, and I thought it would be fun if I got everyone else involved in this as well.
Let's assume that I was working on a mod for the original Gran Turismo on the Sony PlayStation; adding in some tracks and vehicles from Gran Turismo 2, as well as creating new events and rearranging old ones.
If this were happening, what tracks/vehicles/events would YOU like to see be a part of it?
Now before you list anything, there are a few things you should keep in mind.
System limitations is one of them; it would be impossible to add any circuits and vehicles from post-PS1 titles in, so rule them out now. Also, I doubt it would be possible to add in new manufacturers, so only vehicles from those present in the first game: Nissan, Honda, Mazda, Toyota, Mitsubishi, Subaru, Dodge/Chrysler, Chevrolet, TVR and Aston Martin.
And if you can, try and keep to the time which the game was released in; post '98 vehicles would've been unlikely at the time, so I'll probably have to shoot them down now.
Other than that...
(Just remember that this is a 'What If' scenario. This ISN'T something that is happening... but it could.)