6. Cars Variants From Many Eras
Not one GTA so far has featured a car in its newest form and how it looked say 20 years ago. Imagine being able to drive the Admiral in GTA V except it was the same model as 1986 (GTA VC). This is an improvement I feel needs to be implemented because it adds to both realism and fun factors. Even though the era will probably be deemed uncanonical, it would be nice to see older models of the same cars in one game. Even if not all the models were present on the streets, but if they could be ordered on the internet from a classic car dealer website then realism will prevail even more.