Tim Beiko insisted that Ethereum governance must prevent previously rejected headliner proposals from being reintroduced as regular EIPs within the same fork cycle

Quotes that support claims

Once a feature is declined as a potential headliner, it cannot return as a regular EIP within the same fork cycle to prevent back-door reprioritization.

This structured selection process explicitly targets major protocol improvements. Smaller, incremental EIPs should continue through the existing lightweight governance process, maintaining agility and minimizing overhead.