I would like to be able to pick multiple peoples ghosts to race, so I can pick my own ghost as well as a couple friends when racing jam.
On multiple lap tracks have a laptime for every lap, it would make judging each lap easier.
When your racing someone show how far behind them in time you are instead of meters because the meters is not relevant, its your time that you care about. If I'm .1 seconds behind someone I want to know that, not whether im 2 meters because I have no idea what that correlates to.
Being able to see who is following you so you can follow them back.
Being able to send people messages in game
More stats on jam races such as average speed, total back wheel time, throttle, braking, air time.
Ability on versus to collect winnings but not be forced to set next track time immediately.
In cash races, after the race is over provide the name of the track so you can go practice it if you want.
Overall stat/leaderboard with rankings for all jam weeks combined.
More rewards for leveling up, good jam races and versus, just in general much more cool stuff added regularly to keep your interest.