As for tracks, I've come up with a compromise that may work well. After thinking about the transmission issues, scoring system, driver comparisons, and so on, I came up with the following idea, to still allow some flexibility, and still provide a focused tune atmosphere.
Each month there's a 3 track option, separated in alike categories.
For example, We'd say that the NSX will be run on your choice of 3 tracks.
Tsukuba, Deep Forest, Eiger Short Track.
These are 3 short, tight tracks. This would allow tuners to focus their transmissions to a specific 'type' of track, but still require them to take multiple tracks into account suspension wise.
This should rid of extreme track differences that would favor specific transmission settings. Tsukuba vs High Speed Ring for example.
This will also help with localized tuning, rather than a blind hope you've tuned with the right track in mind. Tuners will know from day one what the car will need.
This still allows drivers to avoid tracks that would alter results, giving them the opportunity to choose their stronger track for more accuracy.
I'm just speaking out loud for the moment, please feel free to chime in with any thoughts, suggestions or feedback.