More explanation as to how xp/reputation is calculated [as in is it driver results or team results] - Lewis
The ability to block/ignore people from the in-race chat - Norrie
Basic information on driver attributes
Ability to delete your own forum posts [& thread if no replys]
Allow league host ability to message[pm] all managers in the league {to make them aware of upcoming changes, league closure etc}
Allow driver training every 24hours rather than every race [will allow you to increase health during the off-season as well as keeping "drivers" who race twice per week at a similar level to people who race daily
EDIT... feel free to keep commenting below if i missed anything and i'll update the original post