A particularly simple suggestion. I'd like to be able to change gears on the grid before the race start. Additionally, starting in neutral and having to engage your gear before the race start would be good, but then we might end up with an epidemic of people sitting revving on the grid wondering why they're not moving. Gearchanging on the grid might be scheduled for when the start system is improved (i.e. ability to jump the start, which has already been suggested), but I can't see it taking a huge amount of time to implement.