In very competitive leagues, the finest of margins usually decides the winner or getting a good result.
Cars in such leagues are usually so close together that 'bounce backs' especially on Lap 1 is intense. This is further made ridiculous if a manager is offline and lighter, jetting through the pack just causes such a mess. I remember dropping from P18 - P32 in 1 lap.
All that finally brings me to my suggestion: Make the minimum fuel load '0'.
Reasons why:
1. In leagues where backmarker interference is frowned on, a manager knowing he/she/it/they will be offline can decide to start on the slowest tyre compound, 0 fuel and retire on the spot without interfering.
2. The retirement also avoids added bounce backs that DEFINITELY ruins races.
3. If it's a business thing in terms of engine/parts wear (wanting players not to abuse that or wanting them to keep spending on it), a uniform wear can be implemented. As long as the car is on the grid, it gets a minimum wear regardless whether it started or not.
Thanks for the consideration.