I personally think the map should be expanded with a free update and or even have an autovista feature like the one on forza 5.
also bring interior modifications and have option to change car exhaust muffler tips i think these particular changes should be put into the game.
Another thing would be to add more barn finds.
also Adding a few more cars such as:
Ford Escort RS 1600i
Ford Escort RS Turbo MK4
Vw Golf gti MK5
Audi S4 MK2
Audi RS4 MK2 estate
Ford Capri MK3
Ford Sierra Cosworth Sapphire
1999 Mercedes-Benz S500/S600
1988 Mercedes-Benz 500 SEC Coupe
Vw Caddy Sportline
Mercedes Vito AMG
Vw Polo MK3
Vauxhall Nova GSI/SRI 19 16V
Vauxhall Cavalier SRI/GSI
Vauxhall Astra MK3 SRI/GSI
Renault 5 GT Turbo
Peugeot 205 GTI
Renault 19 16V
Ford Fiesta MK3 RS Turbo
Citroen Saxo VTR