1. /ejecttop id (or something like that)
This command would work same as /eject which is for players inside vehicle.I'm totally fine when someone gets in my car but when there is 4-5 of them on it's painful. Also jumping on the bikes, driver can't really see in front especially when the player stands.
Only problem might be is abusing that command , so rather possible to use the command only when the players are on your car.
2. /loadconfig in SK
Simple as that, you get in the car which you chose and type that command and loads the tune you saved. I think it would be cool to also see it in SK race not only in normal races.
3. NoTapping mode
That would be a mode which disables tapping on bikes for abusing the speed bike can actually reach or jails the one doing it. I think many agree racing would be much funnier like that. Would also give newbies a chance to win some races.
Now to this thing, i think the problem would be straightening up the bike in air. If it's possible to be only enabled when the bike is in the air +/- 2-3 meters above the ground. Contact with ground = no more tapping.