This should be a league rule. I'm also pretty sure this was implemented into the game code but is switched off internally because it was unfavourable. But like all preferences, should be up to the league in what is available and not.
IMO, this should not even have been done the first time around, yet alone be a selectable league rule.
I think the change to 3D would have given Developers a chance to delete that obsolete code, although, I may be wrong.
I think the code re-write may take up an entire update cycle, just to get it serviceable. And people would still complain about this.
To conclude, The game is a racing management sim and not an F1 sim, alone. There does not have to be a safety car or flags element. Last time out, the implementation of this killed the racing at the end of races due to inactive team retirements and alienated almost everyone and there are not a lot of managers in Pro or Elite tiers that would want such a rule implemented, even by their host.
This was, is and always will be a bad idea, sorry to say.