Here are some ideas I have to improve the format, including the same idea that you mentioned above.
- Smaller fuel tanks, so they can’t get 34 laps in one stint. This could open up more strategy variance, I think, as they won’t just put the internationals in and remove them after Lap 34. Enforcing more pitstops could be an issue in the crowded pitlane though.
- Having an aggregate qualifying session on one of the days (i.e. regular driver’s best time + international driver’s best time). I considered previously making qualifying for one of the days only for internationals, but will probably only take away from the spectacle, and I think the aggregate system would work better.
- Alternatively, open up qualifying to all, and the driver who sets the best time in qualifying must start the car.
- No driver can do more than (for example) 55 laps in a row.