An interesting idea would be to remove the visibility of the boost bonus (KERS) for other managers. This could totally change the way we race. Spend completely at the beginning of the race, leave it until the end and try to take the best lap point or try to take risks and get the DRS.
It would make disputes more unpredictable. If we dont know the amount of fuel and the development of rival cars, there is no reason for KERS to be available.