Lead-ins are currently pointless for races!
The race always starts from the drop of the flag, so why not acknowledge and either;
- have a lead-in and enforce some form of limit (watts, w/kg, speed…) until the race actually starts
- remove the pretence of a lead-in and race from the start
Furthermore most race event guides don’t even mention the lead-in distance, distorting true race distance and time allocation.