That’s how it works now right? You can’t overtake before the safety car line? Are you suggesting it’s more like a VSC restart where they have to keep a delta up until the moment that they don’t? Otherwise I don’t see how you avoid racers trying to get the edge!
You can't overtake before the safety car line (or is it the start/finish?), but that's not what I'm talking about.
In NASCAR and IndyCar, the cars line up in formation for restarts (and starts). They have to keep their spacing and speed roughly the same. If they don't, the official will not wave the green flag and they have to complete another lap and try again.
In F1, once the safety car pulls in (or gets far enough ahead on the lap it is pulling in), the lead driver gets to completely control the pace up until they cross that line where they're allowed to overtake. In order to have the best chance to avoid being overtaken at the end of the pit straight, they are incentivized to keep the car behind them guessing. Which means
everyone is guessing.
If the pack had to maintain a maximum speed and minimum spacing up until the lead driver crosses some line or the light changes, then everyone can focus on warming up their tires and
not hitting the car in front of them, rather than making sure they don't miss out whenever the guy in front decides racing should resume.
It's usually not a big deal, but sometimes it is (Mugello 2020). And even when everything goes fine, it's still just stupid. It was funny when they first started doing safety car restarts and only the American drivers had a clue what was going on. But it happens frequently enough now that they should put some rules in place.