No worries! As I did found a method!
Original Pitlane will be used, no matter what is the round, because there is still no possibility to use speed limit properly.
Starting grid will be modified, if track itself lies elsewhere than starting point. So it means if original start grid is never used on track, which contains racing line in track, will be used custom one. It will be always 40, no matter what is the track.
All open configurations will use pitlane.
All tracks, which originally did not have pitlane possibility, will have now. Yes, this means even karting will have one, sure it will look stupid, but hey, you can always change it. At least original method is stored.
All tracks will have many alternative pitlane paths.
Track coding will go further than 9 or 0, using letters, unless using other free spots from other tracks. Westhill and Rockingham will be a very tricky to pull this, to support ALL possible combinations. in Westhill, one track itself has 8 different combinations. Westhill has 4 different tracks.
If track is same but there is other options for pitlane, track will receive alphabetical coding on after name, for example WE2X_W28_Modified 2 A or WE2X_W28_Modified 2 B
Layouts for tracks which originally won't have pitlane:
These tracks won't be used for this method, instead of, it is used the next "closest" one by area of starting grid, though start grid itself will be modified.
Because pitlane is not functional on these tracks, and making custom one won't support speed limit, though this would be done via insim. So I leave this part somewhat blank, though we can still use same methods, only variation will appear.