Since S397 seems to be adding some 'Merican content these past few months, I wonder if they could add Charlotte Motor Speedway(or whatever it's called now) and include the ridiculous Roval. Aside from being an AIW nightmare, it certainly would provide a different kind of racing experience.
I´ve made an AI patch for Mountain Peak Roval some time ago: Look here: https://mega.nz/folder/CIIlGQ5C#jmMrO8sfvanSx4D6X8PaLg -> ISI_MountainPeak RC.rfcmp
With the missing chicane? Frankly, S397 should open these old ISI tracks for the community to improve them wholly (I am assuming that they are encrypted).