I'd like to see:
1) When a player is muted, you shouldn't see their mic icon appearing bottom right during the race. I routinely mute people who have loud music playing and it just means we have this static icon and name for the whole race.
2) Less speed loss from scraping the side walls on straights. Some drivers are ... highly combative and the currently situation just benefits them. Also in timed lap races even the slightest graze just kills the lap, it does seem a bit harsh when rail riding some corners is faster than driving properly.
3) More grip across the board at high speed, yes I know it makes it less realistic but
there are too many sections where the speed required vs the curves/bumps in the road mean that any kind of input other than ploughing ahead with your eyes closed leads to loss of control or fishtailing.
5) Jaguars.
6) And pretty please never make me drive the Atom or that hideous Renault again