Bellini patches for everyone!
After very extensive testing over many months, it appears that while it is possible, with a good deal of time and effort, to create a perfect Performance File/Magic Data file pairing for any player car on any track, the same PF/MD combination never works well when driving in another seat further up or down down the field, not matter how hard one tries. It's a major undertaking to explain this properly, but essentially, to create a perfect mod, where any player could have the perfect experience in any CC car seat without any compromise, each car seat would need to have it's own unique set of PFs.
With 17 circuits and 22 drivers this would mean 374 PFs for each and every mod (ie more than 15,000 in total to cover 1979-2020), which is clearly unrealistic, but it WOULD work brilliantly if one took the time to create them.
However, I'm certain the same effect could be achieved with just one PF/MD combination for each track IF the Bellini patch could be expanded to include 22 Bellini patches in each PF, i.e. one per car seat, which would probably look something like the current failure probability option:
[Player grip]
Team #00=17500,14375
Team #01=13375,16500
Team #02=11625,16250 etc
Of course, I've no idea if this is even possible, but if it were something that COULD be implemented, it would be the final coup de grace in many ways, ensuring that GP4 would remain at the top of the heap of computer racing sims forever. Well, maybe that's a bit extreme, but it would certainly represent an enormous progression: far surpassing even the best of the amazing tweaks that you have managed to implement so far. What do you think?