But that would mean that the lower teams who get lapped 2/3 times per race would end up completing event less of a race distance. It would give an unfair advantage as they could run less fuel, push the engine harder all knowing they wouldn't have to go as far over a race distance.
You do realise that the back markers already do less laps anyway, if they are 2 laps behind they finish 2 laps early, so they can already underfuel pretty much knowing they are doing less laps. A caterham isn't going to compete with a Mclaren if you take 2kg's of fuel out of the car and planning to be a lap down, thus needing less fuel is.... still PLANNING TO BE A LAP DOWN. That isn't a fast strategy nor competitive nor an advantage.
The whole situation is retarded, the fundamental goal behind the change is to make the restart more exciting and to hope more changes of places happen.
The safety car is not an overtaking tool, in no way should they focus on over taking from a restart after a safety car. If someone runs out 40 seconds ahead, and they lose 40 seconds due to someone else crashing, the idea isn't to give 2nd place a better chance at overtaking, it's ludicrous. The lead driver may have already lost 40 seconds, other drivers can lose huge amounts of time AND they want to give them more chance of overtaking on top of letting them gain a huge amount of time. Are they on crack?
Improvements/changes to safety car rules should focus purely on safety and making the situation resolve faster. Stopping them on the track on the first lap after a safety car to let the marshals clear the track with complete safety AND as fast as humanly possible while also stopping the fans losing racing laps is an absolutely good reason to do it, even if it gives an unfair advantage to those behind who gain and may get ahead, the reasons for doing it outweigh the unfairness. But sending them around as usual, making it less safe for marshals, wasting racing laps/fuel, having the slow unlapping and then doing the grid start is pathetic. It brings no safety advantage for marshals, no lap saving, only attempting to create more overtaking out of a fake situation.