Peter
Hi Jack
I think scaling 100% distances races to x0.75 could be better.
With the current 75% distance scale (x0.666), Soft tyres reach 48.8% Tyre in a 15 lap stint/60 lap race, and reach the race pace 'crossover' between tyre compounds, 40.0% tyre, after 19 laps/60 lap race, so would still easily be the dominant tyre of choice at 100% distance, even with a slightly slowed down Soft tyre.
x0.75 scaling would get Softs to hit 50% cliff at around 13 laps/60 lap race, and the 40.0% 'crossover' at 17 laps/60 laps, bringing the Medium (and Hard tyre) back into play.
Scaling should be the first thing to finalise. When that is set, then the tyre deltas can be adjusted accordingly.
I think this idea is very good.
x0.75 scaling would be the Soft a bit worse than medium and hard tyres, so M and H tyres could be a bit more used again.
Moreover, the scaling in the 75% duration races, should be increase a little, such a x0.8 or x0.85 to make different strategies because in many races the strategy is S-S-S, as the others are not so useful.