Alexf1 wrote: ↑24 Jan 2022, 23:50
I said 2 corners in my post, these 2 should be the slow zone for the unlapping cars.
You need to move beyond this specific incident, and look at the larger picture.
For example consider Magnussen's 2016 spa crash, how much of the track do you plan to make a slow zone in that scenario?
The only logical scenario I can see would be La Source through Les Combes (a significant chunk of the lap). Anything else and you will have the drivers entering the vicinity of the crash at high speed (waiting to the last minute to hit the brakes), and then matting it as soon as they are past. Both cases are equally bad.
Entering they might lose it under braking, as they will wait till the last meter to hit the brakes. They will mat it as soon as they exit the zone, and if they happen to pick up a puncture (something we see often), they will be flat out instead of at safety car speeds.